Some of the metrics use an incorrect syntax for specifying the cmask for
an event. Convert to perf syntax so that they can be resolved.

Fixes metrics on Broadwell, SandyBridge.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/n/tip-3k3fkfj8obek9dkmryyrqzhu@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>