Add primary min range check to turn on the kernel idle timer.

BUG: 191435579
Test: atest RefreshRateConfigsTest
Test: atest SurfaceFlinger_test
Test: atest libsurfaceflinger_unittest

Change-Id: Ibd885a2bed8c889ccc622fb4e7a852a9568309d6
diff --git a/services/surfaceflinger/Scheduler/RefreshRateConfigs.h b/services/surfaceflinger/Scheduler/RefreshRateConfigs.h
index 6cd0f42..b8d840a 100644
--- a/services/surfaceflinger/Scheduler/RefreshRateConfigs.h
+++ b/services/surfaceflinger/Scheduler/RefreshRateConfigs.h
@@ -315,8 +315,7 @@
         return mRefreshRates.size() > 1;
     }
 
-    // Class to enumerate options around toggling the kernel timer on and off. We have an option
-    // for no change to avoid extra calls to kernel.
+    // Class to enumerate options around toggling the kernel timer on and off.
     enum class KernelIdleTimerAction {
         TurnOff,  // Turn off the idle timer.
         TurnOn    // Turn on the idle timer.