compiler-gcc.h: neatening

 - Move the inline and noinline blocks together

 - Comment neatening

 - Alignment of __attribute__ uses

 - Consistent naming of __must_be_array macro argument

 - Multiline macro neatening

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Segher Boessenkool <segher@kernel.crashing.org>
Cc: Sasha Levin <levinsasha928@gmail.com>
Cc: Anton Blanchard <anton@samba.org>
Cc: Alan Modra <amodra@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit f6d133f877c8bb0a0934dc8c521c758ee771e901)
Signed-off-by: Alex Shi <alex.shi@linaro.org>