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/bcm6368-eth.c b/drivers/net/bcm6368-eth.c
index 1200049..db573c0 100644
--- a/drivers/net/bcm6368-eth.c
+++ b/drivers/net/bcm6368-eth.c
@@ -10,6 +10,7 @@
 #include <clk.h>
 #include <dm.h>
 #include <dma.h>
+#include <log.h>
 #include <malloc.h>
 #include <miiphy.h>
 #include <net.h>