ARM: dts: at91: sama7g5ek: align power rails for sdmmc0/1

On this board SDMMC0 has a 1.8 signaled eMMC device powered at
3.3V. Hence, correctly describe the connected rails from the PMIC.

SDMMC1 is connected to a voltage switch that can change from
3.3V to 1.8V by a hardware controlled pin.
However SDMMC1 at the moment works only in 3.3V mode (default speed,
no UHS-I modes), thus connect the signaling to the 3.3V rail.

Signed-off-by: Eugen Hristev <[e-mail]>
[claudiu.beznea: reshaped a bit the commit message]
Signed-off-by: Claudiu Beznea <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

arch/arm/boot/dts/at91-sama7g5ek.dts

···
 &sdmmc0 {
 	bus-width = <8>;
 	non-removable;
-	no-1-8-v;
 	sdhci-caps-mask = <0x0 0x00200000>;
+	vmmc-supply = <&vdd_3v3>;
+	vqmmc-supply = <&vldo1>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_sdmmc0_default>;
 	status = "okay";
···
 	bus-width = <4>;
 	no-1-8-v;
 	sdhci-caps-mask = <0x0 0x00200000>;
+	vmmc-supply = <&vdd_3v3>;
+	vqmmc-supply = <&vdd_3v3>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_sdmmc1_default>;
 	status = "okay";