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/mxsfb.c b/drivers/video/mxsfb.c
index edce791..0235731 100644
--- a/drivers/video/mxsfb.c
+++ b/drivers/video/mxsfb.c
@@ -8,6 +8,7 @@
 #include <clk.h>
 #include <dm.h>
 #include <env.h>
+#include <log.h>
 #include <asm/cache.h>
 #include <dm/device_compat.h>
 #include <linux/errno.h>