arm64: dts: imx8mq-phanbell: Align pin configuration group names with schema

Device tree schema expects pin configuration groups to end with 'grp'
suffix, otherwise dtbs_check complain with a warning like:

    ... do not match any of the regexes: 'grp$', 'pinctrl-[0-9]+'
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mq-phanbell.dts

@@ -365,7 +365,7 @@ MX8MQ_IOMUXC_I2C1_SDA_I2C1_SDA			0x4000007f
 		>;
 	};
 
-	pinctrl_pmic: pmicirq {
+	pinctrl_pmic: pmicirqgrp {
 		fsl,pins = <
 			MX8MQ_IOMUXC_GPIO1_IO03_GPIO1_IO3	0x41
 		>;
@@ -395,7 +395,7 @@ MX8MQ_IOMUXC_SD1_RESET_B_USDHC1_RESET_B		0xc1
 		>;
 	};
 
-	pinctrl_usdhc1_100mhz: usdhc1grp100mhz {
+	pinctrl_usdhc1_100mhz: usdhc1-100mhzgrp {
 		fsl,pins = <
 			MX8MQ_IOMUXC_SD1_CLK_USDHC1_CLK			0x85
 			MX8MQ_IOMUXC_SD1_CMD_USDHC1_CMD			0xc5
@@ -412,7 +412,7 @@ MX8MQ_IOMUXC_SD1_RESET_B_USDHC1_RESET_B		0xc1
 		>;
 	};
 
-	pinctrl_usdhc1_200mhz: usdhc1grp200mhz {
+	pinctrl_usdhc1_200mhz: usdhc1-200mhzgrp {
 		fsl,pins = <
 			MX8MQ_IOMUXC_SD1_CLK_USDHC1_CLK			0x87
 			MX8MQ_IOMUXC_SD1_CMD_USDHC1_CMD			0xc7
@@ -429,7 +429,7 @@ MX8MQ_IOMUXC_SD1_RESET_B_USDHC1_RESET_B		0xc1
 		>;
 	};
 
-	pinctrl_usdhc2_gpio: usdhc2grpgpio {
+	pinctrl_usdhc2_gpio: usdhc2gpiogrp {
 		fsl,pins = <
 			MX8MQ_IOMUXC_SD2_CD_B_GPIO2_IO12	0x41
 			MX8MQ_IOMUXC_SD2_RESET_B_GPIO2_IO19	0x41
@@ -448,7 +448,7 @@ MX8MQ_IOMUXC_GPIO1_IO04_USDHC2_VSELECT		0xc1
 		>;
 	};
 
-	pinctrl_usdhc2_100mhz: usdhc2grp100mhz {
+	pinctrl_usdhc2_100mhz: usdhc2-100mhzgrp {
 		fsl,pins = <
 			MX8MQ_IOMUXC_SD2_CLK_USDHC2_CLK			0x85
 			MX8MQ_IOMUXC_SD2_CMD_USDHC2_CMD			0xc5
@@ -460,7 +460,7 @@ MX8MQ_IOMUXC_GPIO1_IO04_USDHC2_VSELECT		0xc1
 		>;
 	};
 
-	pinctrl_usdhc2_200mhz: usdhc2grp200mhz {
+	pinctrl_usdhc2_200mhz: usdhc2-200mhzgrp {
 		fsl,pins = <
 			MX8MQ_IOMUXC_SD2_CLK_USDHC2_CLK			0x87
 			MX8MQ_IOMUXC_SD2_CMD_USDHC2_CMD			0xc7