Revert "Change arch/arm/fvp/Makefile: -mfloat-abi from soft to hard 2"

This reverts commit e8a09e19c2ee01759baa68fb38e7075150862f71.
Revert "Change arch/arm/fvp/Makefile: -mfloat-abi from soft to hard"

This reverts commit 8db4ad47947d00344721957e25656df265472633.
Fix Makefile