Added run time ARM-Neon detection feature in SPL functions.

Review URL: https://webrtc-codereview.appspot.com/728010

git-svn-id: http://webrtc.googlecode.com/svn/trunk@2721 4adac7df-926f-26a2-2b94-8c16560cd09d

android-webrtc.mk

@@ -29,13 +29,16 @@ MY_WEBRTC_COMMON_DEFS += \
 ifeq ($(ARCH_ARM_HAVE_NEON),true)
 MY_WEBRTC_COMMON_DEFS += \
     '-DWEBRTC_ARCH_ARM_NEON'
-MY_ARM_CFLAGS_NEON := \
-    -flax-vector-conversions
 endif
 
 ifneq (,$(filter '-DWEBRTC_DETECT_ARM_NEON' '-DWEBRTC_ARCH_ARM_NEON', \
     $(MY_WEBRTC_COMMON_DEFS)))
 WEBRTC_BUILD_NEON_LIBS := true
+# TODO(kma): Use MY_WEBRTC_COMMON_DEFS for Neon libraies in AECM, NS, and iSAC.
+MY_WEBRTC_COMMON_DEFS += \
+    -mfpu=neon \
+    -mfloat-abi=softfp \
+    -flax-vector-conversions
 endif
 
 ifeq ($(ARCH_ARM_HAVE_ARMV7A),true)