Switch libc and libm to sysv-only hash style

Bug: 19059885
Change-Id: I60a23dc5f9c756994d566818332ca42b305b4a05
diff --git a/libm/Android.mk b/libm/Android.mk
index 2f30c82..c7b777d 100644
--- a/libm/Android.mk
+++ b/libm/Android.mk
@@ -439,7 +439,7 @@
 include $(CLEAR_VARS)
 
 # TODO: This is to work around b/19059885. Remove after root cause is fixed
-LOCAL_LDFLAGS_arm := -Wl,--hash-style=both
+LOCAL_LDFLAGS_arm := -Wl,--hash-style=sysv
 
 LOCAL_MODULE := libm
 LOCAL_CLANG := $(libm_clang)