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/zynq_sdhci.c b/drivers/mmc/zynq_sdhci.c
index 18925d0..2f46f17 100644
--- a/drivers/mmc/zynq_sdhci.c
+++ b/drivers/mmc/zynq_sdhci.c
@@ -10,6 +10,7 @@
 #include <dm.h>
 #include <fdtdec.h>
 #include "mmc_private.h"
+#include <log.h>
 #include <dm/device_compat.h>
 #include <linux/err.h>
 #include <linux/libfdt.h>