aospa: Disable getVsyncPeriodFromHWC

- All devices seem to have some issues with newer qssi
  causing it to render UI in 60fps with 120Hz refresh rate in edge cases
- it might be fixed with newer sdm/display-drivers, but this should fix it for now

Change-Id: I8d929418cb00c5294cb7bbfc9f7476129c7717c2

target/product/aospa-target.mk

@@ -60,7 +60,8 @@ PRODUCT_PROPERTY_OVERRIDES += \
 # Display
 PRODUCT_SYSTEM_EXT_PROPERTIES += \
     debug.sf.frame_rate_multiple_threshold=60 \
-    ro.launcher.blur.appLaunch=0
+    ro.launcher.blur.appLaunch=0 \
+    ro.sf.use_latest_hwc_vsync_period=0
 
 # Exfat FS
 PRODUCT_PACKAGES += \