Add additional flag for FMQ SF

This flag helps decouple the SF FMQ rollout from the rest of the FMQ
rollout

Bug: 284324521
Bug: 315894228
Flag: com.android.graphics.surfaceflinger.flags.adpf_fmq_sf
Flag: android.os.adpf_use_fmq_channel_fixed
Test: atest PowerAdvisorTest
Change-Id: I101fb3861fb7c03c5d070c065acf1069bf90ccc6
diff --git a/services/surfaceflinger/surfaceflinger_flags_new.aconfig b/services/surfaceflinger/surfaceflinger_flags_new.aconfig
index e40be51..d724dfc 100644
--- a/services/surfaceflinger/surfaceflinger_flags_new.aconfig
+++ b/services/surfaceflinger/surfaceflinger_flags_new.aconfig
@@ -4,6 +4,14 @@
 container: "system"
 
 flag {
+  name: "adpf_fmq_sf"
+  namespace: "game"
+  description: "Guards use of the ADPF FMQ system specifically for SurfaceFlinger"
+  bug: "315894228"
+  is_fixed_read_only: true
+} # adpf_fmq_sf
+
+flag {
   name: "adpf_gpu_sf"
   namespace: "game"
   description: "Guards use of the sending ADPF GPU duration hint and load hints from SurfaceFlinger to Power HAL"