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

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

Physmap supports minimal PM since commit 0bc448b49e8a017e ("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>