refactor(build): avoid using values for comparison

With changes to refactor to use first platform makefiles
then parse arch_features.mk file 'ENABLE_RME' will be initialised
only when we define during build or at arch_features.mk thus
making comparison of 'ENABLE_RME' to '0' incorrect.

So keep BRBE disabled when RME is enabled at main makefile level.

Change-Id: I7e3d99eb444678d63585bd5971ada627cfc4fcc9
Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>
2 files changed