mfd: twl: Remove platform data support

There is no in-tree machine that provides a struct twl4030_platform_data
since commit e92fc4f0 ("ARM: OMAP2+: Drop legacy board file for
LDP"). So assume dev_get_platdata() returns NULL in twl_probe() and
simplify accordingly.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20220614152148.252820-1-u.kleine-koenig@pengutronix.de

include/linux/mfd/twl.h

@@ -694,61 +694,6 @@ struct twl4030_audio_data {
 	unsigned int irq_base;
 };
 
-struct twl4030_platform_data {
-	struct twl4030_clock_init_data		*clock;
-	struct twl4030_bci_platform_data	*bci;
-	struct twl4030_gpio_platform_data	*gpio;
-	struct twl4030_madc_platform_data	*madc;
-	struct twl4030_keypad_data		*keypad;
-	struct twl4030_usb_data			*usb;
-	struct twl4030_power_data		*power;
-	struct twl4030_audio_data		*audio;
-
-	/* Common LDO regulators for TWL4030/TWL6030 */
-	struct regulator_init_data		*vdac;
-	struct regulator_init_data		*vaux1;
-	struct regulator_init_data		*vaux2;
-	struct regulator_init_data		*vaux3;
-	struct regulator_init_data		*vdd1;
-	struct regulator_init_data		*vdd2;
-	struct regulator_init_data		*vdd3;
-	/* TWL4030 LDO regulators */
-	struct regulator_init_data		*vpll1;
-	struct regulator_init_data		*vpll2;
-	struct regulator_init_data		*vmmc1;
-	struct regulator_init_data		*vmmc2;
-	struct regulator_init_data		*vsim;
-	struct regulator_init_data		*vaux4;
-	struct regulator_init_data		*vio;
-	struct regulator_init_data		*vintana1;
-	struct regulator_init_data		*vintana2;
-	struct regulator_init_data		*vintdig;
-	/* TWL6030 LDO regulators */
-	struct regulator_init_data              *vmmc;
-	struct regulator_init_data              *vpp;
-	struct regulator_init_data              *vusim;
-	struct regulator_init_data              *vana;
-	struct regulator_init_data              *vcxio;
-	struct regulator_init_data              *vusb;
-	struct regulator_init_data		*clk32kg;
-	struct regulator_init_data              *v1v8;
-	struct regulator_init_data              *v2v1;
-	/* TWL6032 LDO regulators */
-	struct regulator_init_data		*ldo1;
-	struct regulator_init_data		*ldo2;
-	struct regulator_init_data		*ldo3;
-	struct regulator_init_data		*ldo4;
-	struct regulator_init_data		*ldo5;
-	struct regulator_init_data		*ldo6;
-	struct regulator_init_data		*ldo7;
-	struct regulator_init_data		*ldoln;
-	struct regulator_init_data		*ldousb;
-	/* TWL6032 DCDC regulators */
-	struct regulator_init_data		*smps3;
-	struct regulator_init_data		*smps4;
-	struct regulator_init_data		*vio6025;
-};
-
 struct twl_regulator_driver_data {
 	int		(*set_voltage)(void *data, int target_uV);
 	int		(*get_voltage)(void *data);