arm64: cache: add arch_dcache_all()
arm64: cache: add arch_dcache_all()

Add cache function: arch_dcache_all(), it can clean or
invalidate or clean&invalidate all data caches.

Signed-off-by: Jiafei Pan <9a82dae3c788da2e3e922121e23957d42a7b9dfb@nxp.com>

galak/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,finikorg/zephyr,finikorg/zephyr,finikorg/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,galak/zephyr