log: Include missing header for log.h

log.h references cmd_tbl_t but command.h was not included

Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

include/log.h

@@ -9,6 +9,7 @@
 #ifndef __LOG_H
 #define __LOG_H
 
+#include <command.h>
 #include <dm/uclass-id.h>
 #include <linux/list.h>