dt-bindings: power: imx8mm: add defines for DISP blk-ctrl domains

This adds the defines for the power domains provided by the DISP
blk-ctrl.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

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

@@ -23,4 +23,9 @@
 #define IMX8MM_VPUBLK_PD_G2		1
 #define IMX8MM_VPUBLK_PD_H1		2
 
+#define IMX8MM_DISPBLK_PD_CSI_BRIDGE	0
+#define IMX8MM_DISPBLK_PD_LCDIF		1
+#define IMX8MM_DISPBLK_PD_MIPI_DSI	2
+#define IMX8MM_DISPBLK_PD_MIPI_CSI	3
+
 #endif