common: Drop log.h from common header

Move this header out of the common header.

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

test/unicode_ut.c

@@ -9,6 +9,7 @@
 #include <charset.h>
 #include <command.h>
 #include <errno.h>
+#include <log.h>
 #include <malloc.h>
 #include <test/test.h>
 #include <test/suites.h>