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/bmp.c b/cmd/bmp.c
index 0ad2323..6040fa5 100644
--- a/cmd/bmp.c
+++ b/cmd/bmp.c
@@ -15,6 +15,7 @@
 #include <gzip.h>
 #include <image.h>
 #include <lcd.h>
+#include <log.h>
 #include <malloc.h>
 #include <mapmem.h>
 #include <splash.h>