locking/rwsem: Fix checkpatch.pl warnings

WARNING: line over 80 characters
#205: FILE: kernel/locking/rwsem-xadd.c:275:
+		old = cmpxchg(&sem->count, count, count + RWSEM_ACTIVE_WRITE_BIAS);

WARNING: line over 80 characters
#376: FILE: kernel/locking/rwsem-xadd.c:434:
+		 * If there were already threads queued before us and there are no

WARNING: line over 80 characters
#377: FILE: kernel/locking/rwsem-xadd.c:435:
+		 * active writers, the lock must be read owned; so we try to wake

total: 0 errors, 3 warnings, 417 lines checked

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Davidlohr Bueso <davidlohr@hp.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/n/tip-pn6pslaplw031lykweojsn8c@git.kernel.org


Signed-off-by: Ingo Molnar <mingo@kernel.org>