Linaro GCC 4.8 fixes

Signed-off-by: Lens-F <tnoah12@gmail.com>
fix GCC 4.9 compilation errors

Signed-off-by: Lens-F <tnoah12@gmail.com>
ARM: Use -mcpu=cortex-a15 when targeting MSM Krait CPUs

Enable compiler optimizations specific to the Cortex-A15
processor when targeting MSM Krait CPUs. This is necessary
take advantage of the UDIV/SDIV instructions supported by
these processors. To accomplish this, we need to remove the
-march=armv7-a ISA restriction from the compiler options
because 'cortex-a15' is a superset of 'armv7-a'.

Change-Id: I6215aecc11fb4f77c971de7b84f68649ef234357
Signed-off-by: Stepan Moskovchenko <stepanm@codeaurora.org>
Signed-off-by: Lens-F <tnoah12@gmail.com>
makefile: adaptation to full neon-vfpv4 support

Signed-off-by: Lens-F <tnoah12@gmail.com>