common: Drop log.h from common header

Move this header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/usb/gadget/f_sdp.c b/drivers/usb/gadget/f_sdp.c
index 1732a3a..f2fe89d 100644
--- a/drivers/usb/gadget/f_sdp.c
+++ b/drivers/usb/gadget/f_sdp.c
@@ -20,6 +20,7 @@
 #include <common.h>
 #include <console.h>
 #include <env.h>
+#include <log.h>
 #include <malloc.h>
 
 #include <linux/usb/ch9.h>