arm64: dts: imx8qxp-colibri: 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/imx8qxp-colibri.dtsi

@@ -494,7 +494,7 @@ IMX8QXP_EMMC0_RESET_B_CONN_EMMC0_RESET_B	0x21
 		>;
 	};
 
-	pinctrl_usdhc1_100mhz: usdhc1grp100mhz {
+	pinctrl_usdhc1_100mhz: usdhc1-100mhzgrp {
 		fsl,pins = <
 			IMX8QXP_EMMC0_CLK_CONN_EMMC0_CLK		0x06000041
 			IMX8QXP_EMMC0_CMD_CONN_EMMC0_CMD		0x21
@@ -511,7 +511,7 @@ IMX8QXP_EMMC0_RESET_B_CONN_EMMC0_RESET_B	0x21
 		>;
 	};
 
-	pinctrl_usdhc1_200mhz: usdhc1grp200mhz {
+	pinctrl_usdhc1_200mhz: usdhc1-200mhzgrp {
 		fsl,pins = <
 			IMX8QXP_EMMC0_CLK_CONN_EMMC0_CLK		0x06000041
 			IMX8QXP_EMMC0_CMD_CONN_EMMC0_CMD		0x21
@@ -554,7 +554,7 @@ IMX8QXP_USDHC1_VSELECT_CONN_USDHC1_VSELECT	0x21
 		>;
 	};
 
-	pinctrl_usdhc2_100mhz: usdhc2grp100mhz {
+	pinctrl_usdhc2_100mhz: usdhc2-100mhzgrp {
 		fsl,pins = <
 			IMX8QXP_USDHC1_CLK_CONN_USDHC1_CLK		0x06000041	/* SODIMM  47 */
 			IMX8QXP_USDHC1_CMD_CONN_USDHC1_CMD		0x21		/* SODIMM 190 */
@@ -566,7 +566,7 @@ IMX8QXP_USDHC1_VSELECT_CONN_USDHC1_VSELECT	0x21
 		>;
 	};
 
-	pinctrl_usdhc2_200mhz: usdhc2grp200mhz {
+	pinctrl_usdhc2_200mhz: usdhc2-200mhzgrp {
 		fsl,pins = <
 			IMX8QXP_USDHC1_CLK_CONN_USDHC1_CLK		0x06000041	/* SODIMM  47 */
 			IMX8QXP_USDHC1_CMD_CONN_USDHC1_CMD		0x21		/* SODIMM 190 */