arm64: dts: rockchip: enable sdr-104 for sdmmc on Quartz A

Now that we have working io-domain support, we can enable higher date
rates on the sdmmc card.

Before:
Timing buffered disk reads:  68 MB in  3.08 seconds =  22.07 MB/sec

After:
Timing buffered disk reads: 188 MB in  3.02 seconds =  62.29 MB/sec
Signed-off-by: Peter Geis <pgwipeout@gmail.com>
Link: https://lore.kernel.org/r/20220511150117.113070-6-pgwipeout@gmail.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3566-quartz64-a.dts

@@ -596,6 +596,7 @@ &sdmmc0 {
 	disable-wp;
 	pinctrl-names = "default";
 	pinctrl-0 = <&sdmmc0_bus4 &sdmmc0_clk &sdmmc0_cmd &sdmmc0_det>;
+	sd-uhs-sdr104;
 	vmmc-supply = <&vcc3v3_sd>;
 	vqmmc-supply = <&vccio_sd>;
 	status = "okay";