locking: Move the mutex code to kernel/locking/

Suggested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/n/tip-1ditvncg30dgbpvrz2bxfmke@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --cc kernel/Makefile
Simple merge

diff --cc kernel/locking/Makefile
Simple merge

diff --cc kernel/locking/mutex-debug.c
Simple merge

diff --cc kernel/locking/mutex-debug.h
Simple merge

diff --cc kernel/locking/mutex.c
Simple merge

diff --cc kernel/locking/mutex.h
Simple merge