Add MRR guarding flag frame_rate_category_mrr

This flag will guard new dVRR scheduler features from MRR devices.

Bug: 330224639
Test: presubmit
Change-Id: Ib180f5fb800de19758362d80d0d3e280d5cf378d
diff --git a/services/surfaceflinger/common/FlagManager.cpp b/services/surfaceflinger/common/FlagManager.cpp
index 3b669c6..a469662 100644
--- a/services/surfaceflinger/common/FlagManager.cpp
+++ b/services/surfaceflinger/common/FlagManager.cpp
@@ -115,6 +115,7 @@
     /// Trunk stable readonly flags ///
     DUMP_READ_ONLY_FLAG(connected_display);
     DUMP_READ_ONLY_FLAG(enable_small_area_detection);
+    DUMP_READ_ONLY_FLAG(frame_rate_category_mrr);
     DUMP_READ_ONLY_FLAG(misc1);
     DUMP_READ_ONLY_FLAG(vrr_config);
     DUMP_READ_ONLY_FLAG(hotplug2);
@@ -197,6 +198,7 @@
 /// Trunk stable readonly flags ///
 FLAG_MANAGER_READ_ONLY_FLAG(connected_display, "")
 FLAG_MANAGER_READ_ONLY_FLAG(enable_small_area_detection, "")
+FLAG_MANAGER_READ_ONLY_FLAG(frame_rate_category_mrr, "debug.sf.frame_rate_category_mrr")
 FLAG_MANAGER_READ_ONLY_FLAG(misc1, "")
 FLAG_MANAGER_READ_ONLY_FLAG(vrr_config, "debug.sf.enable_vrr_config")
 FLAG_MANAGER_READ_ONLY_FLAG(hotplug2, "")