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/usb/eth/asix88179.c b/drivers/usb/eth/asix88179.c
index 00706be..b4a5639 100644
--- a/drivers/usb/eth/asix88179.c
+++ b/drivers/usb/eth/asix88179.c
@@ -7,6 +7,7 @@
 
 #include <common.h>
 #include <dm.h>
+#include <log.h>
 #include <usb.h>
 #include <net.h>
 #include <linux/mii.h>