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/drivers/mmc/rpmb.c b/drivers/mmc/rpmb.c
index ee6dbe3..ea7e506 100644
--- a/drivers/mmc/rpmb.c
+++ b/drivers/mmc/rpmb.c
@@ -9,6 +9,7 @@
 
 #include <config.h>
 #include <common.h>
+#include <log.h>
 #include <memalign.h>
 #include <mmc.h>
 #include <sdhci.h>