rockchip: rk3328: add clock driver

Add rk3328 clock driver and cru structure definition.

Signed-off-by: William Zhang <william.zhang@rock-chips.com>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/drivers/clk/rockchip/Makefile b/drivers/clk/rockchip/Makefile
index b66e81e..1091a76 100644
--- a/drivers/clk/rockchip/Makefile
+++ b/drivers/clk/rockchip/Makefile
@@ -7,4 +7,5 @@
 obj-$(CONFIG_ROCKCHIP_RK3036) += clk_rk3036.o
 obj-$(CONFIG_ROCKCHIP_RK3188) += clk_rk3188.o
 obj-$(CONFIG_ROCKCHIP_RK3288) += clk_rk3288.o
+obj-$(CONFIG_ROCKCHIP_RK3328) += clk_rk3328.o
 obj-$(CONFIG_ROCKCHIP_RK3399) += clk_rk3399.o