libusbhost: Use logcat for debugging when building device library.

Signed-off-by: Mike Lockwood <lockwood@android.com>
diff --git a/libusbhost/Android.mk b/libusbhost/Android.mk
index c8c8758..97c1edc 100644
--- a/libusbhost/Android.mk
+++ b/libusbhost/Android.mk
@@ -38,4 +38,6 @@
 LOCAL_MODULE := libusbhost
 LOCAL_SRC_FILES := usbhost.c
 
+LOCAL_CFLAGS := -g -DUSE_LIBLOG
+
 include $(BUILD_STATIC_LIBRARY)