SF: set debug.sf.frame_rate_multiple_threshold to 60 by default

If the device only have 60 and 120 Hz in the config group, 60 Hz won't be
used when watching a 24 fps video and instead 120 Hz will be used because
it is perfectly divisible by 24.

This is a publicly documented AOSP behavior [1], but it simply does not
make any practical sense and trades off significant amount of power for a
very-hard-to-notice jitter-free experience.

Set debug.sf.frame_rate_multiple_threshold to 60 by default to limit this
behavior to 60 or lower fps.

[1] https://source.android.com/devices/graphics/multiple-refresh-rate

Change-Id: I66353abc46ad16e63b2c9188794469ad71f2192e
Signed-off-by: Juhyung Park <[email protected]>

services/surfaceflinger/SurfaceFlinger.cpp

@@ -2857,7 +2857,7 @@ sp<DisplayDevice> SurfaceFlinger::setupNewDisplayDeviceInternal(
         scheduler::RefreshRateConfigs::Config config =
                 {.enableFrameRateOverride = android::sysprop::enable_frame_rate_override(false),
                  .frameRateMultipleThreshold =
-                         base::GetIntProperty("debug.sf.frame_rate_multiple_threshold", 0),
+                         base::GetIntProperty("debug.sf.frame_rate_multiple_threshold", 60),
                  .idleTimerTimeout = idleTimerTimeoutMs,
                  .kernelIdleTimerController = kernelIdleTimerController};
         creationArgs.refreshRateConfigs =