perf vendor events intel: Update Silvermont events to V14

Signed-off-by: NAndi Kleen <ak@linux.intel.com>
Link: https://lkml.kernel.org/r/20180118234518.GA27753@tassilo.jf.intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/pmu-events/arch/x86/silvermont/cache.json

@@ -36,12 +36,13 @@
         "BriefDescription": "L2 cache request misses"
     },
     {
+        "PublicDescription": "Counts cycles that fetch is stalled due to an outstanding ICache miss. That is, the decoder queue is able to accept bytes, but the fetch unit is unable to provide bytes due to an ICache miss.  Note: this event is not the same as the total number of cycles spent retrieving instruction cache lines from the memory hierarchy.\r\nCounts cycles that fetch is stalled due to any reason. That is, the decoder queue is able to accept bytes, but the fetch unit is unable to provide bytes.  This will include cycles due to an ITLB miss, ICache miss and other events. \r\n",
         "EventCode": "0x86",
         "Counter": "0,1",
         "UMask": "0x4",
         "EventName": "FETCH_STALL.ICACHE_FILL_PENDING_CYCLES",
         "SampleAfterValue": "200003",
-        "BriefDescription": "Counts the number of cycles the NIP stalls because of an icache miss. This is a cumulative count of cycles the NIP stalled for all icache misses."
+        "BriefDescription": "Cycles code-fetch stalled due to an outstanding ICache miss."
     },
     {
         "PEBS": "1",