clk: rockchip: rk3328: Handle usb480m phy clock

Handle USB480M clock ID in set_rate() and set_parent()
to allow the dt assigned-clocks and assigned-clock-parents
work on rk3328.dtsi

Cc: Lukasz Majewski <lukma@denx.de>
Cc: Sean Anderson <seanga2@gmail.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/drivers/clk/rockchip/clk_rk3328.c b/drivers/clk/rockchip/clk_rk3328.c
index 969b7a8..ef97381 100644
--- a/drivers/clk/rockchip/clk_rk3328.c
+++ b/drivers/clk/rockchip/clk_rk3328.c
@@ -681,6 +681,7 @@
 	case ACLK_GMAC:
 	case PCLK_GMAC:
 	case SCLK_USB3OTG_SUSPEND:
+	case USB480M:
 		return 0;
 	default:
 		return -ENOENT;
@@ -771,6 +772,7 @@
 	case SCLK_MAC2IO_EXT:
 		return rk3328_gmac2io_ext_set_parent(clk, parent);
 	case DCLK_LCDC:
+	case USB480M:
 	case SCLK_PDM:
 	case SCLK_RTC32K:
 	case SCLK_UART0: