arm64: dts: imx8mp-phyboard-pollux: Add missing usdhc clocks assignment

Add the missing usdhc2 root clock to 200MHz to be able to support
SDR104 mode for SD-Card on phyBOARD-Pollux-i.MX8MP.
Signed-off-by: Jonas Kuenstler <j.kuenstler@phytec.de>
Signed-off-by: Teresa Remmet <t.remmet@phytec.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mp-phyboard-pollux-rdk.dts

@@ -103,6 +103,8 @@ &uart1 {
 
 /* SD-Card */
 &usdhc2 {
+	assigned-clocks = <&clk IMX8MP_CLK_USDHC2>;
+	assigned-clock-rates = <200000000>;
 	pinctrl-names = "default", "state_100mhz", "state_200mhz";
 	pinctrl-0 = <&pinctrl_usdhc2>, <&pinctrl_usdhc2_pins>;
 	pinctrl-1 = <&pinctrl_usdhc2_100mhz>, <&pinctrl_usdhc2_pins>;