perf vendor events arm64:: Add i.MX95 DDR Performance Monitor metrics

Add JSON metrics for i.MX95 DDR Performance Monitor.

Reviewed-by: John Garry <[email protected]>
Reviewed-by: Ian Rogers <[email protected]>
Reviewed-by: Frank Li <[email protected]>
Signed-off-by: Xu Yang <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Namhyung Kim <[email protected]>

Author: Xu Yang

tools/perf/pmu-events/arch/arm64/freescale/imx95/sys/ddrc.json

@@ -0,0 +1,9 @@
+[
+   {
+           "BriefDescription": "ddr cycles event",
+           "EventCode": "0x00",
+           "EventName": "imx95_ddr.cycles",
+           "Unit": "imx9_ddr",
+           "Compat": "imx95"
+   }
+]