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/meson_i2c.c b/drivers/i2c/meson_i2c.c
index bcf4516..2eb1eba 100644
--- a/drivers/i2c/meson_i2c.c
+++ b/drivers/i2c/meson_i2c.c
@@ -3,6 +3,7 @@
  * (C) Copyright 2017 - Beniamino Galvani <b.galvani@gmail.com>
  */
 #include <common.h>
+#include <log.h>
 #include <asm/io.h>
 #include <clk.h>
 #include <dm.h>