rockchip: arm: use 'arch-rockchip' for common header

rockchip platform header file is in 'arch-rockchip'
instead of arch-$(SOC) for all SoCs.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
diff --git a/arch/arm/include/asm/gpio.h b/arch/arm/include/asm/gpio.h
index 992a841..370031f 100644
--- a/arch/arm/include/asm/gpio.h
+++ b/arch/arm/include/asm/gpio.h
@@ -1,6 +1,6 @@
 #if !defined(CONFIG_ARCH_UNIPHIER) && !defined(CONFIG_ARCH_STI) && \
 	!defined(CONFIG_ARCH_K3) && !defined(CONFIG_ARCH_BCM6858) && \
-	!defined(CONFIG_ARCH_BCM63158)
+	!defined(CONFIG_ARCH_BCM63158) && !defined(CONFIG_ARCH_ROCKCHIP)
 #include <asm/arch/gpio.h>
 #endif
 #include <asm-generic/gpio.h>