Make sdcard log to the log rather than stderr.

Change-Id: I9c78941184c5e364055bfac766e1e542d3c23c87
diff --git a/sdcard/sdcard.c b/sdcard/sdcard.c
index 7baad63..566a66c 100644
--- a/sdcard/sdcard.c
+++ b/sdcard/sdcard.c
@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+#define LOG_TAG "sdcard"
+
 #include <ctype.h>
 #include <dirent.h>
 #include <errno.h>
@@ -35,6 +37,7 @@
 
 #include <cutils/fs.h>
 #include <cutils/hashmap.h>
+#include <cutils/log.h>
 #include <cutils/multiuser.h>
 
 #include <private/android_filesystem_config.h>
@@ -90,12 +93,12 @@
 #define FUSE_TRACE 0
 
 #if FUSE_TRACE
-#define TRACE(x...) fprintf(stderr,x)
+#define TRACE(x...) ALOGD(x)
 #else
 #define TRACE(x...) do {} while (0)
 #endif
 
-#define ERROR(x...) fprintf(stderr,x)
+#define ERROR(x...) ALOGE(x)
 
 #define FUSE_UNKNOWN_INO 0xffffffff