rockchip: remove redundant pinctrl header including

No code is using this header file, remove it.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/arch/arm/mach-rockchip/rk3036-board.c b/arch/arm/mach-rockchip/rk3036-board.c
index e6ea0e9..c594c4d 100644
--- a/arch/arm/mach-rockchip/rk3036-board.c
+++ b/arch/arm/mach-rockchip/rk3036-board.c
@@ -14,7 +14,6 @@
 #include <asm/arch-rockchip/grf_rk3036.h>
 #include <asm/arch-rockchip/boot_mode.h>
 #include <asm/arch-rockchip/sdram_rk3036.h>
-#include <dm/pinctrl.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
diff --git a/arch/arm/mach-rockchip/rk3328-board-spl.c b/arch/arm/mach-rockchip/rk3328-board-spl.c
index 7f49d05..f24fd89 100644
--- a/arch/arm/mach-rockchip/rk3328-board-spl.c
+++ b/arch/arm/mach-rockchip/rk3328-board-spl.c
@@ -7,7 +7,6 @@
 #include <common.h>
 #include <debug_uart.h>
 #include <dm.h>
-#include <dm/pinctrl.h>
 #include <ram.h>
 #include <spl.h>
 #include <asm/io.h>