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/cmd/axi.c b/cmd/axi.c
index 18533ef..c9d53c0 100644
--- a/cmd/axi.c
+++ b/cmd/axi.c
@@ -14,6 +14,7 @@
 #include <command.h>
 #include <console.h>
 #include <dm.h>
+#include <log.h>
 
 /* Currently selected AXI bus device */
 static struct udevice *axi_cur_bus;