beckham: Use TARGET_SCREEN_DENSITY

This variable is used to auto-populate the ro.sf.lcd_density as
well as selecting density bucket for resources in recovery.

Bug: 118676832
Test: adb shell getprop ro.sf.lcd_density
Test: boot into recovery
Change-Id: Ib383d18b61e7a2058a69ae26136aa053fdba4df2

BoardConfig.mk

@@ -25,6 +25,9 @@ TARGET_OTA_ASSERT_DEVICE := beckham
 # Bluetooth
 BOARD_BLUETOOTH_BDROID_BUILDCFG_INCLUDE_DIR := $(DEVICE_PATH)/bluetooth
 
+# Display
+TARGET_SCREEN_DENSITY := 420
+
 # Kernel
 TARGET_KERNEL_CONFIG := lineageos_beckham_defconfig
 

vendor_prop.mk

@@ -32,7 +32,3 @@ PRODUCT_PROPERTY_OVERRIDES += \
     ro.vendor.sensors.sta_detect=true \
     ro.vendor.sensors.mot_detect=true \
     ro.vendor.sdk.sensors.gestures=false
-
-# Display
-PRODUCT_PROPERTY_OVERRIDES += \
-    ro.sf.lcd_density=420