Move transport declarations into transport.h.

There are a few cloexec issues in here as an added bonus.

Change-Id: I1699d719d733f47878bdba0454230cf5ab6a60b6
diff --git a/adb/transport.c b/adb/transport.c
index ffe59da..4904cd0 100644
--- a/adb/transport.c
+++ b/adb/transport.c
@@ -14,13 +14,15 @@
  * limitations under the License.
  */
 
+#include "sysdeps.h"
+
+#include "transport.h"
+
+#include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <unistd.h>
 #include <string.h>
-#include <errno.h>
-
-#include "sysdeps.h"
+#include <unistd.h>
 
 #define   TRACE_TAG  TRACE_TRANSPORT
 #include "adb.h"
@@ -494,8 +496,7 @@
 
 
 /* call this function each time the transport list has changed */
-void  update_transports(void)
-{
+void update_transports(void) {
     char             buffer[1024];
     int              len;
     device_tracker*  tracker;