pinctrl: renesas: r8a77980: Optimize fixed-width reserved fields

Describe registers with fixed-width register fields and many reserved
fields using the PINMUX_CFG_REG_VAR() macro, as the latter supports a
shorthand not requiring dummy values.

This reduces kernel size by 198 bytes.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/0bf6b069a794b3c56c0c9311ac4b2ada577a9cb7.1649865241.git.geert+renesas@glider.be

drivers/pinctrl/renesas/pfc-r8a77980.c

@@ -278,9 +278,6 @@
 #define IP10_11_8	FM(FSO_CFE_0_N)			F_(0, 0)		F_(0, 0)		FM(VI0_DATA22)	F_(0, 0)	F_(0, 0)	F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0)
 #define IP10_15_12	FM(FSO_CFE_1_N)			F_(0, 0)		F_(0, 0)		FM(VI0_DATA23)	F_(0, 0)	F_(0, 0)	F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0)
 #define IP10_19_16	FM(FSO_TOE_N)			F_(0, 0)		F_(0, 0)		F_(0, 0)	F_(0, 0)	F_(0, 0)	F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0)
-#define IP10_23_20	F_(0, 0)			F_(0, 0)		F_(0, 0)		F_(0, 0)	F_(0, 0)	F_(0, 0)	F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0)
-#define IP10_27_24	F_(0, 0)			F_(0, 0)		F_(0, 0)		F_(0, 0)	F_(0, 0)	F_(0, 0)	F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0)
-#define IP10_31_28	F_(0, 0)			F_(0, 0)		F_(0, 0)		F_(0, 0)	F_(0, 0)	F_(0, 0)	F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0) F_(0, 0)
 
 #define PINMUX_GPSR	\
 \
@@ -340,9 +337,9 @@ FM(IP8_7_4)	IP8_7_4		FM(IP9_7_4)	IP9_7_4		FM(IP10_7_4)	IP10_7_4 \
 FM(IP8_11_8)	IP8_11_8	FM(IP9_11_8)	IP9_11_8	FM(IP10_11_8)	IP10_11_8 \
 FM(IP8_15_12)	IP8_15_12	FM(IP9_15_12)	IP9_15_12	FM(IP10_15_12)	IP10_15_12 \
 FM(IP8_19_16)	IP8_19_16	FM(IP9_19_16)	IP9_19_16	FM(IP10_19_16)	IP10_19_16 \
-FM(IP8_23_20)	IP8_23_20	FM(IP9_23_20)	IP9_23_20	FM(IP10_23_20)	IP10_23_20 \
-FM(IP8_27_24)	IP8_27_24	FM(IP9_27_24)	IP9_27_24	FM(IP10_27_24)	IP10_27_24 \
-FM(IP8_31_28)	IP8_31_28	FM(IP9_31_28)	IP9_31_28	FM(IP10_31_28)	IP10_31_28
+FM(IP8_23_20)	IP8_23_20	FM(IP9_23_20)	IP9_23_20 \
+FM(IP8_27_24)	IP8_27_24	FM(IP9_27_24)	IP9_27_24 \
+FM(IP8_31_28)	IP8_31_28	FM(IP9_31_28)	IP9_31_28
 
 /* MOD_SEL0 */		/* 0 */			/* 1 */
 #define MOD_SEL0_11	FM(SEL_CANFD0_0)	FM(SEL_CANFD0_1)
@@ -2507,17 +2504,11 @@ static const struct sh_pfc_function pinmux_functions[] = {
 static const struct pinmux_cfg_reg pinmux_config_regs[] = {
 #define F_(x, y)	FN_##y
 #define FM(x)		FN_##x
-	{ PINMUX_CFG_REG("GPSR0", 0xe6060100, 32, 1, GROUP(
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
+	{ PINMUX_CFG_REG_VAR("GPSR0", 0xe6060100, 32,
+			     GROUP(-10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+				   1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1),
+			     GROUP(
+		/* GP0_31_22 RESERVED */
 		GP_0_21_FN,	GPSR0_21,
 		GP_0_20_FN,	GPSR0_20,
 		GP_0_19_FN,	GPSR0_19,
@@ -2609,22 +2600,11 @@ static const struct pinmux_cfg_reg pinmux_config_regs[] = {
 		GP_2_1_FN,	GPSR2_1,
 		GP_2_0_FN,	GPSR2_0, ))
 	},
-	{ PINMUX_CFG_REG("GPSR3", 0xe606010c, 32, 1, GROUP(
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
+	{ PINMUX_CFG_REG_VAR("GPSR3", 0xe606010c, 32,
+			     GROUP(-15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+				   1, 1, 1, 1, 1, 1),
+			     GROUP(
+		/* GP3_31_17 RESERVED */
 		GP_3_16_FN,	GPSR3_16,
 		GP_3_15_FN,	GPSR3_15,
 		GP_3_14_FN,	GPSR3_14,
@@ -2643,14 +2623,12 @@ static const struct pinmux_cfg_reg pinmux_config_regs[] = {
 		GP_3_1_FN,	GPSR3_1,
 		GP_3_0_FN,	GPSR3_0, ))
 	},
-	{ PINMUX_CFG_REG("GPSR4", 0xe6060110, 32, 1, GROUP(
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
+	{ PINMUX_CFG_REG_VAR("GPSR4", 0xe6060110, 32,
+			     GROUP(-7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+				   1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+				   1, 1),
+			     GROUP(
+		/* GP4_31_25 RESERVED */
 		GP_4_24_FN,	GPSR4_24,
 		GP_4_23_FN,	GPSR4_23,
 		GP_4_22_FN,	GPSR4_22,
@@ -2677,24 +2655,11 @@ static const struct pinmux_cfg_reg pinmux_config_regs[] = {
 		GP_4_1_FN,	GPSR4_1,
 		GP_4_0_FN,	GPSR4_0, ))
 	},
-	{ PINMUX_CFG_REG("GPSR5", 0xe6060114, 32, 1, GROUP(
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
-		0, 0,
+	{ PINMUX_CFG_REG_VAR("GPSR5", 0xe6060114, 32,
+			     GROUP(-17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+				   1, 1, 1, 1),
+			     GROUP(
+		/* GP5_31_15 RESERVED */
 		GP_5_14_FN,	GPSR5_14,
 		GP_5_13_FN,	GPSR5_13,
 		GP_5_12_FN,	GPSR5_12,
@@ -2816,10 +2781,10 @@ static const struct pinmux_cfg_reg pinmux_config_regs[] = {
 		IP9_7_4
 		IP9_3_0 ))
 	},
-	{ PINMUX_CFG_REG("IPSR10", 0xe6060228, 32, 4, GROUP(
-		IP10_31_28
-		IP10_27_24
-		IP10_23_20
+	{ PINMUX_CFG_REG_VAR("IPSR10", 0xe6060228, 32,
+			     GROUP(-12, 4, 4, 4, 4, 4),
+			     GROUP(
+		/* IP10_31_20 RESERVED */
 		IP10_19_16
 		IP10_15_12
 		IP10_11_8