perf tests: Skip 'perf stat metrics (shadow stat) test' for hybrid

Currently we don't support shadow stat for hybrid.

  root@ssp-pwrt-002:~# ./perf stat -e cycles,instructions -a -- sleep 1

   Performance counter stats for 'system wide':

      12,883,109,591      cpu_core/cycles/
       6,405,163,221      cpu_atom/cycles/
         555,553,778      cpu_core/instructions/
         841,158,734      cpu_atom/instructions/

         1.002644773 seconds time elapsed

Now there is no shadow stat 'insn per cycle' reported. We will support
it later and now just skip the 'perf stat metrics (shadow stat) test'.
Signed-off-by: NJin Yao <yao.jin@linux.intel.com>
Reviewed-by: NJiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210427070139.25256-26-yao.jin@linux.intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/tests/shell/stat+shadow_stat.sh

@@ -7,6 +7,9 @@ set -e
 # skip if system-wide mode is forbidden
 perf stat -a true > /dev/null 2>&1 || exit 2
 
+# skip if on hybrid platform
+perf stat -a -e cycles sleep 1 2>&1 | grep -e cpu_core && exit 2
+
 test_global_aggr()
 {
 	perf stat -a --no-big-num -e cycles,instructions sleep 1  2>&1 | \