Adds a charge_enable handler to facilitate enabling and disabling
a charge cycle. This deprecates enabling and disable the charge
cycle via the CHARGER_PROP_STATUS property.
Signed-off-by: Ricardo Rivera-Matos <ricardo.rivera-matos@cirrus.com>
Move the syscall_handler.h header, used internally only to a dedicated
internal folder that should not be used outside of Zephyr.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>