cortex-a7 supports div

(cherry picked from commit cece45d22652ca0d8a57a6cb03c5ca2a915a9a07)

Change-Id: I9975171ef2c2cd3a9481fa0896473fec684095f3
diff --git a/core/config.mk b/core/config.mk
index 9b9923a..6311e68 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -456,7 +456,7 @@
 endif
 
 DEX2OAT_TARGET_INSTRUCTION_SET_FEATURES := default
-ifneq (,$(filter $(TARGET_CPU_VARIANT),cortex-a15 krait))
+ifneq (,$(filter $(TARGET_CPU_VARIANT),cortex-a7 cortex-a15 krait))
 DEX2OAT_TARGET_INSTRUCTION_SET_FEATURES := div
 endif