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/video/am335x-fb.c b/drivers/video/am335x-fb.c
index 0f066df..b1e67cc 100644
--- a/drivers/video/am335x-fb.c
+++ b/drivers/video/am335x-fb.c
@@ -14,6 +14,7 @@
 #include <common.h>
 #include <dm.h>
 #include <lcd.h>
+#include <log.h>
 #include <video.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/hardware.h>