locking/atomics: Regenerate the atomics-check SHA1's

The include/asm-generic/atomic-instrumented.h checksum got out
of sync, so regenerate it. (No change to actual code.)

Also make scripts/atomic/gen-atomics.sh executable, to make
it easier to use.

The auto-generated atomic header signatures are now fine:

  thule:~/tip> scripts/atomic/check-atomics.sh
  thule:~/tip>
Signed-off-by: NIngo Molnar <mingo@kernel.org>
Cc: linux-kernel@vger.kernel.org
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Paul E. McKenney <paulmck@kernel.org>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: NIngo Molnar <mingo@kernel.org>

include/asm-generic/atomic-instrumented.h

@@ -1830,4 +1830,4 @@ atomic64_dec_if_positive(atomic64_t *v)
 })
 
 #endif /* _ASM_GENERIC_ATOMIC_INSTRUMENTED_H */
-// 9d5e6a315fb1335d02f0ccd3655a91c3dafcc63e
+// 4bec382e44520f4d8267e42620054db26a659ea3