MAINTAINERS: Add clk-apple-nco under ARM/APPLE MACHINE

Acked-by: Sven Peter <sven@svenpeter.dev>
Acked-by: Hector Martin <marcan@marcan.st>
Signed-off-by: Martin Povišer <povik+lin@cutebit.org>
Link: https://lore.kernel.org/r/20220208183411.61090-4-povik+lin@cutebit.org


Signed-off-by: Stephen Boyd <sboyd@kernel.org>