common: Drop log.h from common header

Move this header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>

cmd/source.c

@@ -18,6 +18,7 @@
 #include <command.h>
 #include <env.h>
 #include <image.h>
+#include <log.h>
 #include <malloc.h>
 #include <mapmem.h>
 #include <asm/byteorder.h>