Mark default.supp as ETC instead of SHARED_LIBRARY

It's not a shared library, but a text file that will be installed in a
subdirectory under lib/...

I'm improving the sanity checks in the build system that shared
libraries are usable, and this one is not, since it's not a library at
all.

Change-Id: I5d1731b96c0b32603f5c0b4252e9396d4407a980
diff --git a/Android.mk b/Android.mk
index f105db4..6117e3e 100644
--- a/Android.mk
+++ b/Android.mk
@@ -613,9 +613,8 @@
 # Copy prebuilt suppressions
 include $(CLEAR_VARS)
 LOCAL_MODULE := default.supp
-LOCAL_MODULE_CLASS := SHARED_LIBRARIES
+LOCAL_MODULE_CLASS := ETC
 LOCAL_MODULE_PATH := $(PRODUCT_OUT)$(vg_target_module_path)
-LOCAL_STRIP_MODULE := false
 LOCAL_SRC_FILES := bionic.supp
 
 include $(BUILD_PREBUILT)
@@ -624,9 +623,8 @@
 include $(CLEAR_VARS)
 LOCAL_IS_HOST_MODULE := true
 LOCAL_MODULE := default.supp
-LOCAL_MODULE_CLASS := SHARED_LIBRARIES
+LOCAL_MODULE_CLASS := ETC
 LOCAL_MODULE_PATH := $(HOST_OUT_SHARED_LIBRARIES)/valgrind
-LOCAL_STRIP_MODULE := false
 LOCAL_SRC_FILES := bionic.supp
 
 include $(BUILD_PREBUILT)