arm64: meson: update WiFi SDIO in dts for JetHub D1

Fix the dts to match board's reference design:
- update the maximum SDIO frequency to match 3.3v regulator (Wi-Fi SDIO module)
Signed-off-by: Vyacheslav Bocharov <adeep@lexina.in>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lore.kernel.org/r/20220326075110.1462301-5-adeep@lexina.in

arch/arm64/boot/dts/amlogic/meson-axg-jethome-jethub-j100.dts

@@ -257,8 +257,7 @@ &sd_emmc_b {
 
 	bus-width = <4>;
 	cap-sd-highspeed;
-	sd-uhs-sdr104;
-	max-frequency = <200000000>;
+	max-frequency = <50000000>;
 	non-removable;
 	disable-wp;