Update assembly files to unified syntax

This allows them to be built with clang's internal assembler.
Also, pass -I flags to the assembler explicitly and stop disabling
clang.

Signed-off-by: Bernhard Rosenkränzer <Bernhard.Rosenkranzer@linaro.org>
Change-Id: I67dfd0d1b44217af6cf159f4d8810b3c2173702b
54 files changed