common: Remove <common.h> and add needed includes

Remove <common.h> from all "commmon/" files and when needed add
missing include files directly.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/common/usb_hub.c b/common/usb_hub.c
index 2e054eb..807f490 100644
--- a/common/usb_hub.c
+++ b/common/usb_hub.c
@@ -21,7 +21,6 @@
  * Probes device for being a hub and configurate it
  */
 
-#include <common.h>
 #include <command.h>
 #include <dm.h>
 #include <env.h>
@@ -29,6 +28,7 @@
 #include <log.h>
 #include <malloc.h>
 #include <memalign.h>
+#include <time.h>
 #include <asm/processor.h>
 #include <asm/unaligned.h>
 #include <linux/ctype.h>