clk: rockchip: use the dclk_vop_frac clock ids on rk3399

Export the dclk_vop_frac out, so we can set the dclk_vop as the
child of dclk_vop_frac, and then we can start to take use of
the fractional dividers.
Signed-off-by: Yakir Yang <ykk@rock-chips.com>
Signed-off-by: Chris Zhong <zyw@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

drivers/clk/rockchip/clk-rk3399.c

@@ -1168,7 +1168,7 @@ static struct rockchip_clk_branch rk3399_clk_branches[] __initdata = {
 			RK3399_CLKSEL_CON(49), 8, 2, MFLAGS, 0, 8, DFLAGS,
 			RK3399_CLKGATE_CON(10), 12, GFLAGS),
 
-	COMPOSITE_FRACMUX_NOGATE(0, "dclk_vop0_frac", "dclk_vop0_div", 0,
+	COMPOSITE_FRACMUX_NOGATE(DCLK_VOP0_FRAC, "dclk_vop0_frac", "dclk_vop0_div", 0,
 			RK3399_CLKSEL_CON(106), 0,
 			&rk3399_dclk_vop0_fracmux),
 
@@ -1198,7 +1198,7 @@ static struct rockchip_clk_branch rk3399_clk_branches[] __initdata = {
 			RK3399_CLKSEL_CON(50), 8, 2, MFLAGS, 0, 8, DFLAGS,
 			RK3399_CLKGATE_CON(10), 13, GFLAGS),
 
-	COMPOSITE_FRACMUX_NOGATE(0, "dclk_vop1_frac", "dclk_vop1_div", 0,
+	COMPOSITE_FRACMUX_NOGATE(DCLK_VOP1_FRAC, "dclk_vop1_frac", "dclk_vop1_div", 0,
 			RK3399_CLKSEL_CON(107), 0,
 			&rk3399_dclk_vop1_fracmux),