Unify handling as base-hw does and enables us to use uBoot image for foc_panda.
Added spec file for ARM-VFPv3 floating-point unit. This shadows 'base/include/arm/' with 'base/include/arm/vfp' and enables a 'memcpy_cpu' version that mainly uses the FPU. Enabled VFP support for 'foc_arndale'. Ref #773