fix(build): handle invalid spd build options

Currently the top level Makefile checks any invalid SPD build flags
before parsing platform makefile thus any invalid combination enabled
in platform makefile will go unnoticed.

Move handling of all invalid SPD build option checks after platform level makefile is parsed.

Change-Id: Ib3b384ca99403ebaf34f6ce662c93480827e2136
Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>
1 file changed