trusty: Mark vexpress-a15 target as 32-bit

We rely on KERNEL_32BIT being set for Trusty targets that are 32-bit
platforms. Adds this make variable definition to the vexpress target.

Test: build.py vexpress-a15-trusty
Bug: None
Change-Id: I3cdf96efd7b10b0d56b212542bc1bc9632a1fb0f
1 file changed
tree: 888101848b217f874c5c46fa0d0489979119785f
  1. project/
  2. .clang-format
  3. LICENSE
  4. PREUPLOAD.cfg