drivers: watchdog: cmsdk_apb: Drop dependency
drivers: watchdog: cmsdk_apb: Drop dependency

The Kconfig encodes a dependency on SOC_FAMILY_ARM
even though there is no actual dependency.

This is generic ARM IP and can be used in any SoC.

Signed-off-by: Moritz Fischer <b8d4025d2b8bf5751b0cdbeb665b5d4746bed72d@google.com>

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