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/higmacv300.c b/drivers/net/higmacv300.c
index d338643..ea9f947 100644
--- a/drivers/net/higmacv300.c
+++ b/drivers/net/higmacv300.c
@@ -4,6 +4,7 @@
  */
 
 #include <cpu_func.h>
+#include <log.h>
 #include <malloc.h>
 #include <asm/cache.h>
 #include <asm/io.h>