clk: rockchip: rk3399: init 816 MHz for ARM big core

We don't use clk_set_defaults() to initial it, because
there are too many clocks to be set in "assigned-clock-rates"
which wastes time.

Signed-off-by: Joseph Chen <chenjh@rock-chips.com>
Change-Id: I6de5e2174945fdbce06e044c390ae2860970b0c4

drivers/clk/rockchip/clk_rk3399.c

@@ -1396,6 +1396,7 @@ static void rkclk_init(struct rk3399_cru *cru)
 	u32 pclk_div;
 
 	rk3399_configure_cpu(cru, APLL_816_MHZ, CPU_CLUSTER_LITTLE);
+	rk3399_configure_cpu(cru, APLL_816_MHZ, CPU_CLUSTER_BIG);
 
 	/*
 	 * some cru registers changed by bootrom, we'd better reset them to