Don't use stale NDK libraries for IA

IA builds will break (due to the bionic _dso_handle bug) if stale libraries are
used. For now, just guard the defns against IA builds.

Change-Id: Ic9df6e0de78a0e221b95370ba6f01ce07714edde
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
diff --git a/native/Android.mk b/native/Android.mk
index b294469..94e0298 100644
--- a/native/Android.mk
+++ b/native/Android.mk
@@ -8,8 +8,10 @@
 	src/dictionary.cpp \
 	src/char_utils.cpp
 
+ifneq ($(TARGET_ARCH),x86)
 LOCAL_NDK_VERSION := 4
 LOCAL_SDK_VERSION := 8
+endif
 
 LOCAL_MODULE := libjni_latinime