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/i2c-uclass.c b/drivers/i2c/i2c-uclass.c
index e9ec388..32aed92 100644
--- a/drivers/i2c/i2c-uclass.c
+++ b/drivers/i2c/i2c-uclass.c
@@ -7,6 +7,7 @@
 #include <dm.h>
 #include <errno.h>
 #include <i2c.h>
+#include <log.h>
 #include <malloc.h>
 #include <dm/device-internal.h>
 #include <dm/lists.h>