locking, ARM: Annotate low level hw locks as raw

Annotate the low level hardware locks which must not be preempted.

In mainline this change documents the low level nature of
the lock - otherwise there's no functional difference. Lockdep
and Sparse checking will work as usual.

Change-Id: I1c73fd5472b9ab356173637a7819095394004ebf
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
[kumarrav@codeaurora.org: fixup gic.c and cache-l2x0.c merge conflict]
Signed-off-by: Ravi Kumar <kumarrav@codeaurora.org>