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/ddr/altera/sdram_s10.c b/drivers/ddr/altera/sdram_s10.c
index 0b36d6c..91f76e0 100644
--- a/drivers/ddr/altera/sdram_s10.c
+++ b/drivers/ddr/altera/sdram_s10.c
@@ -12,6 +12,7 @@
 #include <fdtdec.h>
 #include <hang.h>
 #include <init.h>
+#include <log.h>
 #include <ram.h>
 #include <reset.h>
 #include "sdram_s10.h"