File header cleanup.

 * sysdeps.h should always be included first.
 * TRACE_TAG needs to be defined before anything is included.
 * Some files were missing copyright headers.
 * Save precious bytes on my SSD by removing useless whitespace.

Change-Id: I88980e6e00b5be1093806cf286740d9e4a033b94
diff --git a/adb/usb_linux.cpp b/adb/usb_linux.cpp
index c01ec8c..6fd2b40 100644
--- a/adb/usb_linux.cpp
+++ b/adb/usb_linux.cpp
@@ -14,6 +14,10 @@
  * limitations under the License.
  */
 
+#define TRACE_TAG TRACE_USB
+
+#include "sysdeps.h"
+
 #include <ctype.h>
 #include <dirent.h>
 #include <errno.h>
@@ -33,9 +37,6 @@
 #include <linux/usb_ch9.h>
 #endif
 
-#include "sysdeps.h"
-
-#define   TRACE_TAG  TRACE_USB
 #include "adb.h"
 #include "transport.h"