rockchip: use 'arch-rockchip' as header file path

Rockchip use 'arch-rockchip' instead of arch-$(SOC) as common
header file path, so that we can get the correct path directly.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
diff --git a/drivers/ram/rockchip/sdram_rk3328.c b/drivers/ram/rockchip/sdram_rk3328.c
index e8b234d..f4e0b18 100644
--- a/drivers/ram/rockchip/sdram_rk3328.c
+++ b/drivers/ram/rockchip/sdram_rk3328.c
@@ -7,9 +7,9 @@
 #include <dm.h>
 #include <ram.h>
 #include <syscon.h>
-#include <asm/arch/clock.h>
-#include <asm/arch/grf_rk3328.h>
-#include <asm/arch/sdram_common.h>
+#include <asm/arch-rockchip/clock.h>
+#include <asm/arch-rockchip/grf_rk3328.h>
+#include <asm/arch-rockchip/sdram_common.h>
 
 struct dram_info {
 	struct ram_info info;