RockPi 4 SE MMC speed fix

I changed this in the dt and got more than double the speeds from my Samsung U3 SD card:

However I have no idea what the process of getting this into the kernel source looks like.

--- rk3399-rock-pi-4b.dts       2023-10-04 15:36:05.031221270 +0200
+++ rk3399-rock-pi-4b-mod.dts   2023-10-04 00:34:15.773888431 +0200
@@ -342,6 +342,7 @@
                disable-wp;
                pinctrl-names = "default";
                pinctrl-0 = <0x26 0x27 0x28 0x29>;
+               sd-uhs-sdr104;
                phandle = <0xce>;
        };