ARM Platforms: Don't build BL1 and BL2 if RESET_TO_SP_MIN=1
ARM Platforms: Don't build BL1 and BL2 if RESET_TO_SP_MIN=1

Change-Id: Iadb21bb56f2e61d7e6aec9b3b3efd30059521def
Signed-off-by: Soby Mathew <4d7af7c5c404e07961f9e1e79d6f17409c1d7db7@arm.com>

achingupta/arm-trusted-firmware,achingupta/arm-trusted-firmware