debug: make the Kernel leaner - picked from @morfic

Signed-off-by: Francisco Franco <franciscofranco.1990@gmail.com>
Makefile: solve ftrace compilation with Linaro
Fix warnings and compilation errors with gcc 4.8
Neon instead of softvfp+vfp
Updated defconfig for LZO compression
Updated Makefile (labodj)
Updated arch/arm/boot/compressed/Makefile (labodj)