fix(nuvoton): fix MMU mapping settings

MAP_DEVICE0 for internal (register) space access settings
flag MT_NS was changed to MT_SECURE to enable access
to the TSGEN register, otherwise it brings to MCR violation,
because access to the TSGEN register is locked and enabled
for secure only

Change-Id: Id2fe90d30342706c58064161360d8be6e0d5616b
Signed-off-by: Margarita Glushkin <rutigl@gmail.com>
1 file changed