rockchip: clk: clk_rk3568: Add CLK_PCIEPHY2_REF support

Add dummy support for the CLK_PCIEPHY2_REF clock.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>

drivers/clk/rockchip/clk_rk3568.c

@@ -427,6 +427,7 @@ static ulong rk3568_pmuclk_set_rate(struct clk *clk, ulong rate)
 		break;
 	case CLK_PCIEPHY0_REF:
 	case CLK_PCIEPHY1_REF:
+	case CLK_PCIEPHY2_REF:
 		return 0;
 	default:
 		return -ENOENT;