ARM: dts: imx53: Add GPIO line names on M53Menlo

Add meaningful GPIO line names for the board GPIOs.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: NXP Linux Team <linux-imx@nxp.com>
To: linux-arm-kernel@lists.infradead.org
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx53-m53menlo.dts

@@ -116,6 +116,78 @@ &fec {
 	status = "okay";
 };
 
+&gpio1 {
+	gpio-line-names =
+		"", "", "", "",
+		"", "", "", "",
+		"", "", "", "",
+		"", "", "", "",
+		"", "", "", "",
+		"", "", "", "",
+		"", "", "", "",
+		"", "", "", "";
+};
+
+&gpio2 {
+	gpio-line-names =
+		"", "", "", "",
+		"", "", "", "",
+		"TestPin_SV2_3", "", "", "",
+		"", "", "", "",
+		"", "", "", "",
+		"", "", "", "",
+		"", "", "", "",
+		"", "", "", "";
+};
+
+&gpio3 {
+	gpio-line-names =
+		"", "", "", "",
+		"", "", "", "",
+		"", "", "", "",
+		"", "", "", "",
+		"", "", "", "",
+		"", "", "", "",
+		"CPLD_JTAG_TDI", "CPLD_JTAG_TMS", "", "",
+		"", "CPLD_JTAG_TDO", "", "";
+};
+
+&gpio5 {
+	gpio-line-names =
+		"", "", "", "",
+		"", "", "", "",
+		"", "", "", "",
+		"", "", "", "",
+		"", "", "CPLD_JTAG_TCK", "KBD_intK",
+		"CPLD_int", "CPLD_JTAG_internal", "CPLD_D[0]", "CPLD_D[1]",
+		"CPLD_D[2]", "CPLD_D[3]", "CPLD_D[4]", "CPLD_D[5]",
+		"CPLD_D[6]", "CPLD_D[7]", "DISP_reset", "KBD_intI";
+};
+
+&gpio6 {
+	gpio-line-names =
+		"", "", "", "",
+		"CPLD_reset", "", "", "",
+		"", "", "", "",
+		"", "", "", "",
+		"", "", "", "",
+		"", "", "", "",
+		"", "", "", "",
+		"", "", "", "";
+};
+
+&gpio7 {
+	gpio-line-names =
+		"", "", "", "",
+		"", "", "", "",
+		"", "", "", "",
+		"", "USB-OTG_OverCurrent", "", "",
+		"", "", "", "",
+		"", "", "", "",
+		"", "", "", "",
+		"", "", "", "";
+};
+
 &i2c1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_i2c1>;