RSE: Unittests: Fix bl1_2_otp_or_flash unittests

There is no flash layout defined for the unittests so this change
defines the missing macros and include paths.

Change-Id: Ib4a44edac2128f72ebbaadd69888fea30e4ac735
Signed-off-by: Gabor Toth <gabor.toth2@arm.com>
1 file changed