dt-bindings: clock: imx8mm: Add GPIO clocks

Add macro for the GPIO clocks of the i.MX8MM.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

include/dt-bindings/clock/imx8mm-clock.h

@@ -239,6 +239,12 @@
 
 #define IMX8MM_CLK_NAND_USDHC_BUS_RAWNAND_CLK	222
 
-#define IMX8MM_CLK_END				223
+#define IMX8MM_CLK_GPIO1_ROOT			223
+#define IMX8MM_CLK_GPIO2_ROOT			224
+#define IMX8MM_CLK_GPIO3_ROOT			225
+#define IMX8MM_CLK_GPIO4_ROOT			226
+#define IMX8MM_CLK_GPIO5_ROOT			227
+
+#define IMX8MM_CLK_END				228
 
 #endif