mk/gcc.mk: Add CFLAGS for avoid function reorder on ELF
mk/gcc.mk: Add CFLAGS for avoid function reorder on ELF

In newer versions of GCC function reorder causes a bad ELF
generation.

Signed-off-by: Anibal Limon <b5f0f822327db62ed599ac923b570c6baf81f31f@gmail.com>

alimon/prex,alimon/prex,alimon/prex,alimon/prex