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/i2c/designware_i2c_pci.c b/drivers/i2c/designware_i2c_pci.c
index 50f03e3..bd34ec0 100644
--- a/drivers/i2c/designware_i2c_pci.c
+++ b/drivers/i2c/designware_i2c_pci.c
@@ -7,6 +7,7 @@
 
 #include <common.h>
 #include <dm.h>
+#include <log.h>
 #include <spl.h>
 #include <asm/lpss.h>
 #include "designware_i2c.h"