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/net/pfe_eth/pfe_driver.c b/drivers/net/pfe_eth/pfe_driver.c
index f70a235..e5edfbe 100644
--- a/drivers/net/pfe_eth/pfe_driver.c
+++ b/drivers/net/pfe_eth/pfe_driver.c
@@ -4,6 +4,7 @@
  * Copyright 2017 NXP
  */
 
+#include <log.h>
 #include <malloc.h>
 #include <net/pfe_eth/pfe_eth.h>
 #include <net/pfe_eth/pfe_firmware.h>