1. Fix asm() register constraints in cogl when building for ARM.
2. Fix cogl to handle Thumb builds.
(From OE-Core rev: cdfea71ff1c4f80ff3a0ade1d7514cbf3c22abde)
Signed-off-by: Roy.Li <rongqing.li@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>