arm64: select APPLE_PMGR_PWRSTATE for ARCH_APPLE

arm64: select APPLE_PMGR_PWRSTATE for ARCH_APPLE

Critical devices like the NVMe on Apple silicon systems depend on
APPLE_PMGR_PWRSTATE and others are powered down coming out of reset so
select APPLE_PMGR_PWRSTATE to ensure these devices work. Since the
systems are not totally unsusable (boot to initramfs is expected to
work) allow !PM builds without APPLE_PMGR_PWRSTATE.

Link: https://lore.kernel.org/asahi/2e022f4e-4c87-4da1-9d02-f7a3ae7c5798@arm.com/
Suggested-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Janne Grunau <j@jannau.net>
Link: https://patch.msgid.link/20251231-arch-arm64-apple-defconfig-v1-1-4ff19805ba39@jannau.net
Signed-off-by: Sven Peter <sven@kernel.org>