libstagefright: Compile MP3 & AAC decoders in 32bit ARM Mode

Speeds up the decoding leaving more time for cpuidle (lp2),
thus lowering overall current drain.

Change-Id: Ia4e0636b1813810072fe0a4f94f6921adf2eab31
Signed-off-by: James Wylder <james.wylder@motorola.com>
diff --git a/media/libstagefright/codecs/aacdec/Android.mk b/media/libstagefright/codecs/aacdec/Android.mk
index d5d8f3e..69e331f 100644
--- a/media/libstagefright/codecs/aacdec/Android.mk
+++ b/media/libstagefright/codecs/aacdec/Android.mk
@@ -149,6 +149,8 @@
 
 LOCAL_C_INCLUDES := frameworks/base/media/libstagefright/include
 
+LOCAL_ARM_MODE := arm
+
 LOCAL_MODULE := libstagefright_aacdec
 
 include $(BUILD_STATIC_LIBRARY)
diff --git a/media/libstagefright/codecs/mp3dec/Android.mk b/media/libstagefright/codecs/mp3dec/Android.mk
index fb56a93..753500e 100644
--- a/media/libstagefright/codecs/mp3dec/Android.mk
+++ b/media/libstagefright/codecs/mp3dec/Android.mk
@@ -53,5 +53,7 @@
 
 LOCAL_MODULE := libstagefright_mp3dec
 
+LOCAL_ARM_MODE := arm
+
 include $(BUILD_STATIC_LIBRARY)