rockchip: clk: add px30 clock driver

The px30 contains 2 separate clock controllers, pmucru and cru.
Add drivers for them.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko.stuebner@theobroma-systems.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/drivers/clk/rockchip/Makefile b/drivers/clk/rockchip/Makefile
index 41cfb7a..f9134fd 100644
--- a/drivers/clk/rockchip/Makefile
+++ b/drivers/clk/rockchip/Makefile
@@ -3,6 +3,7 @@
 # Copyright (c) 2017 Rockchip Electronics Co., Ltd
 #
 
+obj-$(CONFIG_ROCKCHIP_PX30) += clk_px30.o
 obj-$(CONFIG_ROCKCHIP_RK3036) += clk_rk3036.o
 obj-$(CONFIG_ROCKCHIP_RK3128) += clk_rk3128.o
 obj-$(CONFIG_ROCKCHIP_RK3188) += clk_rk3188.o