ARM: dts: at91: use clock-controller name for PMC nodes

[ Upstream commit d08f92bd

 ]

Use clock-controller generic name for PMC nodes.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20230517094119.2894220-2-claudiu.beznea@microchip.com
Stable-dep-of: f6ad3c13

 ("ARM: dts: at91: sam9x60: fix the SOC detection")
Signed-off-by: Sasha Levin <sashal@kernel.org>