dt-bindings: mtd: physmap: add 'clocks' and 'power-domains'

Physmap supports minimal PM since commit 0bc448b ("mtd: maps:
physmap: Add minimal Runtime PM support"), so support it also when used
in DT configurations.

Suggested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

Author: Wolfram Sang

Documentation/devicetree/bindings/mtd/mtd-physmap.yaml

@@ -69,6 +69,16 @@ properties:
     minItems: 1
     maxItems: 8
 
+  clocks:
+    description: |
+      Chips may need clocks to be enabled for themselves or for transparent
+      bridges.
+
+  power-domains:
+    description: |
+      Chips may need power domains to be enabled for themselves or for
+      transparent bridges.
+
   bank-width:
     description: Width (in bytes) of the bank.  Equal to the device width times
       the number of interleaved chips.