Add coverage flag for libm.

Change-Id: I195d38c5e1f50d1cc6d4353dc8857f11b803b7a3
diff --git a/libm/Android.mk b/libm/Android.mk
index 60f4cb8..69a17a1 100644
--- a/libm/Android.mk
+++ b/libm/Android.mk
@@ -1,6 +1,8 @@
 ifneq ($(TARGET_USE_PRIVATE_LIBM),true)
 LOCAL_PATH:= $(call my-dir)
 
+bionic_coverage := false
+
 # TODO: this comes from from upstream's libc, not libm, but it's an
 # implementation detail that should have hidden visibility, so it needs
 # to be in whatever library the math code is in.
@@ -273,6 +275,8 @@
 LOCAL_SRC_FILES := $(libm_common_src_files)
 LOCAL_SYSTEM_SHARED_LIBRARIES := libc
 
+LOCAL_NATIVE_COVERAGE := $(bionic_coverage)
+
 # arch-specific settings
 LOCAL_C_INCLUDES_arm := $(LOCAL_PATH)/arm
 LOCAL_SRC_FILES_arm := arm/fenv.c
@@ -306,6 +310,8 @@
 LOCAL_SYSTEM_SHARED_LIBRARIES := libc
 LOCAL_WHOLE_STATIC_LIBRARIES := libm
 
+LOCAL_NATIVE_COVERAGE := $(bionic_coverage)
+
 # We'd really like to do this for all architectures, but since this wasn't done
 # before, these symbols must continue to be exported on LP32 for binary
 # compatibility.