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/bcmgenet.c b/drivers/net/bcmgenet.c
index b7b0f57..1ef8e8e 100644
--- a/drivers/net/bcmgenet.c
+++ b/drivers/net/bcmgenet.c
@@ -16,6 +16,7 @@
  * we only support v5, as used in the Raspberry Pi 4.
  */
 
+#include <log.h>
 #include <asm/cache.h>
 #include <asm/io.h>
 #include <clk.h>