msm8953-common: Enable full dexpreopt

* This marginally speeds up A/B OTA postinstall at cost of a
  little bit bigger zip size.

Change-Id: I61e71a20bbfc17998bd0c8bade7ee98faad15524

BoardConfigCommon.mk

@@ -109,11 +109,11 @@ TARGET_HW_DISK_ENCRYPTION := true
 ifeq ($(HOST_OS),linux)
   ifneq ($(TARGET_BUILD_VARIANT),eng)
     ifeq ($(WITH_DEXPREOPT),)
+      WITH_DEXPREOPT_BOOT_IMG_AND_SYSTEM_SERVER_ONLY := false
       WITH_DEXPREOPT := true
     endif
   endif
 endif
-WITH_DEXPREOPT_BOOT_IMG_ONLY ?= true
 
 # Display
 MAX_VIRTUAL_DISPLAY_DIMENSION := 4096