build: fix cortex-a5 typo

thanks BRD

Change-Id: I756b0d8861d2a615f54caaaf340461b22186749f
allow arm PIE to be disabled

Change-Id: Ida4db6eae1d6b83356b0453dafa74736bb7024e8
clang: substitute fpu neon-vfp[3|4] for fpu neon

Clang does not natively support the neon-vfp option
so we will substitute it for neon.
This allows neon-vfp to be set for gcc, and won't cause
clang to error out.

Clang will enable neon and a vfp automatically with supported
cpu's.
Do not set fpu to vfp[3|4] as this may remove neon

Change-Id: I21615d4bd156d24f4e4870c1021c46e74e0d3389
allow oracle to be forced

Change-Id: I9b830be17c02794c11d9a15e9fc6c8ec0b0a9df0