fix(a5ds): add default value for ARM_DISABLE_TRUSTED_WDOG

With introduction of check on boolean flags, it should be ensured that
each boolean flag has default value provided by platform.

Signed-off-by: Manish Pandey <manish.pandey2@arm.com>
Change-Id: Ia92c3dded842e14099b4a7667569605d7066a8f9
1 file changed