perf/x86: Fix embarrasing typo

Because we're all human and typing sucks..

Fixes: 7fb0f1de

 ("perf/x86: Fix compile warnings for intel_uncore")
Reported-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: x86@kernel.org
Link: http://lkml.kernel.org/n/tip-be0bftjh8yfm4uvmvtf3yi87@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>