[RRS] Enable RRS in FHD+ by default

The impact of the change only aims to users who have never configed RRS
and those who do factory reset themselves.

Bug: 232536153
Test: factory reset the device and check RRS setting in FHD+
Test: configure RRS and check the config is stored after rebooting
Test: disable smooth display and check the expected refresh rate
Change-Id: I01c46ac2566f0b060fcf23a092601f05bbf568cb

device-cheetah.mk

@@ -79,12 +79,15 @@ PRODUCT_COPY_FILES += \
 # Display LBE
 PRODUCT_DEFAULT_PROPERTY_OVERRIDES += vendor.display.lbe.supported=1
 
-#config of display brightness dimming
+#   config of display brightness dimming
 PRODUCT_DEFAULT_PROPERTY_OVERRIDES += vendor.display.brightness.dimming.usage=1
 
-#config of primary display frames to reach LHBM peak brightness
+#   config of primary display frames to reach LHBM peak brightness
 PRODUCT_DEFAULT_PROPERTY_OVERRIDES += vendor.primarydisplay.lhbm.frames_to_reach_peak_brightness=2
 
+# Display RRS default Config
+PRODUCT_DEFAULT_PROPERTY_OVERRIDES += vendor.display.primary.default_boot_config=1080x2340@120
+
 # NFC
 PRODUCT_COPY_FILES += \
 	frameworks/native/data/etc/android.hardware.nfc.xml:$(TARGET_COPY_OUT_VENDOR)/etc/permissions/android.hardware.nfc.xml \