mini-emulator-mips: Set WITH_DEXPREOPT=true for linux

Change-Id: I9d230a552ac6510501447dbf6195ecd2b7fa2a01
diff --git a/BoardConfig.mk b/BoardConfig.mk
index 3fd88a6..77f448f 100644
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -5,3 +5,7 @@
 
 # same as mips except HAL
 include device/generic/mips/BoardConfig.mk
+
+ifeq ($(HOST_OS),linux)
+  WITH_DEXPREOPT := true
+endif