rockchip: Tidy up board include-file ordering

These board files have inconsistent #include ordering. Fix them.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
diff --git a/arch/arm/mach-rockchip/rk3368-board-spl.c b/arch/arm/mach-rockchip/rk3368-board-spl.c
index eae8ef1..230850a 100644
--- a/arch/arm/mach-rockchip/rk3368-board-spl.c
+++ b/arch/arm/mach-rockchip/rk3368-board-spl.c
@@ -6,7 +6,6 @@
 #include <common.h>
 #include <debug_uart.h>
 #include <dm.h>
-#include <dm/pinctrl.h>
 #include <ram.h>
 #include <spl.h>
 #include <asm/io.h>
@@ -15,6 +14,7 @@
 #include <asm/arch/hardware.h>
 #include <asm/arch/periph.h>
 #include <asm/arch/timer.h>
+#include <dm/pinctrl.h>
 
 void board_debug_uart_init(void)
 {