spm: Build with FP registers save/restore support

Enabling CTX_INCLUDE_FPREGS to test SIMD/SVE vectors save/restore
routine when switching context.

Change-Id: I50cc35ded2ae0a40239be5c53946b4e12c04acc4
Signed-off-by: Max Shvetsov <maksims.svecovs@arm.com>
6 files changed