Add a system property for System UI compiler filter

Bug: 227310505
Test: m
Change-Id: Ieaa417a5024fd367543ff9879e5d57f0eb41aa94
(cherry picked from commit eb3d4caa9974932abca7e280138c68e8af7b7aed)
diff --git a/device.mk b/device.mk
index 113ac84..c449d89 100644
--- a/device.mk
+++ b/device.mk
@@ -60,6 +60,11 @@
 VENDOR_SECURITY_PATCH := $(PLATFORM_SECURITY_PATCH)
 
 
+# Compile SystemUI on device with `speed`.
+PRODUCT_VENDOR_PROPERTIES += \
+	dalvik.vm.systemuicompilerfilter=speed
+
+
 # Set system properties identifying the chipset
 PRODUCT_VENDOR_PROPERTIES += ro.soc.manufacturer=QTI
 PRODUCT_VENDOR_PROPERTIES += ro.soc.model=SDM450