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/arch/arm/mach-rockchip/rk3399/rk3399.c b/arch/arm/mach-rockchip/rk3399/rk3399.c
index d8467d7..a0af096 100644
--- a/arch/arm/mach-rockchip/rk3399/rk3399.c
+++ b/arch/arm/mach-rockchip/rk3399/rk3399.c
@@ -4,9 +4,10 @@
  */
 
 #include <common.h>
+#include <spl_gpio.h>
 #include <asm/armv8/mmu.h>
 #include <asm/io.h>
-#include <asm/arch/hardware.h>
+#include <asm/arch-rockchip/hardware.h>
 
 DECLARE_GLOBAL_DATA_PTR;