x264: Add patch to remove default flags -mcpu=cortex-a8 and -mfpu=neon

-march flag is not in CFLAGS so this will always default to -mcpu=cortex-a8
-mfpu=neon. Obviously wrong for other machines.

Signed-off-by: Andrei Gherzan <andrei@gherzan.ro>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>