Switch to armv7 neon.

Bug: 27307303
Change-Id: Iedd402dbe5122496c790fd80e56af058d061ad55
(cherry picked from commit 2379eaa61a1a8d4818adb0be0f999a1abd85e8de)
diff --git a/BoardConfig.mk b/BoardConfig.mk
index b4cbd50..59f76ff 100644
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -8,7 +8,7 @@
 TARGET_NO_KERNEL := true
 TARGET_ARCH := arm
 
-TARGET_ARCH_VARIANT := armv7-a
+TARGET_ARCH_VARIANT := armv7-a-neon
 TARGET_CPU_VARIANT := generic
 TARGET_CPU_ABI := armeabi-v7a
 TARGET_CPU_ABI2 := armeabi