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/ram/rockchip/sdram_rk3128.c b/drivers/ram/rockchip/sdram_rk3128.c
index 8486653..0162955 100644
--- a/drivers/ram/rockchip/sdram_rk3128.c
+++ b/drivers/ram/rockchip/sdram_rk3128.c
@@ -5,6 +5,7 @@
 
 #include <common.h>
 #include <dm.h>
+#include <log.h>
 #include <ram.h>
 #include <syscon.h>
 #include <asm/arch-rockchip/clock.h>