perf powerpc: Update global/local variants for p_stage_cyc

Update the arch_support_sort_key() function in powerpc to enable
presenting local and global variants of sort key 'p_stage_cyc'.

Update the "se_header" strings for these in arch_perf_header_entry()
along with instruction latency.
Reported-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Athira Jajeev <atrajeev@linux.vnet.ibm.com>
Tested-by: Nageswara R Sastry <rnsastry@linux.ibm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: linuxppc-dev@lists.ozlabs.org
Link: https://lore.kernel.org/r/20211203022038.48240-2-atrajeev@linux.vnet.ibm.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/arch/powerpc/util/event.c

@@ -40,8 +40,12 @@ const char *arch_perf_header_entry(const char *se_header)
 {
 	if (!strcmp(se_header, "Local INSTR Latency"))
 		return "Finish Cyc";
-	else if (!strcmp(se_header, "Pipeline Stage Cycle"))
+	else if (!strcmp(se_header, "INSTR Latency"))
+		return "Global Finish_cyc";
+	else if (!strcmp(se_header, "Local Pipeline Stage Cycle"))
 		return "Dispatch Cyc";
+	else if (!strcmp(se_header, "Pipeline Stage Cycle"))
+		return "Global Dispatch_cyc";
 	return se_header;
 }
 
@@ -49,5 +53,7 @@ int arch_support_sort_key(const char *sort_key)
 {
 	if (!strcmp(sort_key, "p_stage_cyc"))
 		return 1;
+	if (!strcmp(sort_key, "local_p_stage_cyc"))
+		return 1;
 	return 0;
 }