Switch libz.so to hash-style=both

Bug: http://b/19059885
Change-Id: Ia0ae87217720fb1c6b334af3548545b143054c89
(cherry picked from commit 9630d2db3b117d88e08c33a8c32ff7b7a8bab2f0)
diff --git a/Android.mk b/Android.mk
index b0e4b63..c8cf0b1 100644
--- a/Android.mk
+++ b/Android.mk
@@ -27,7 +27,7 @@
 LOCAL_CFLAGS += -O3 -DUSE_MMAP
 
 # TODO: This is to work around b/19059885. Remove after root cause is fixed
-LOCAL_LDFLAGS_arm := -Wl,--hash-style=sysv
+LOCAL_LDFLAGS_arm := -Wl,--hash-style=both
 
 LOCAL_SRC_FILES := $(zlib_files)
 ifneq ($(TARGET_BUILD_APPS),)