arm64: dts: rockchip: fix rk3399-leez-p710 vcc3v3-lan supply

Correct a typo in the vin-supply property.  The input supply is
always-on, so this mistake doesn't affect whether the supply is actually
enabled correctly.

Fixes: fc702ed4 ("arm64: dts: rockchip: Add dts for Leez RK3399 P710 SBC")
Signed-off-by: John Keeping <john@metanate.com>
Link: https://lore.kernel.org/r/20211102182908.3409670-3-john@metanate.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3399-leez-p710.dts

@@ -55,7 +55,7 @@ vcc3v3_lan: vcc3v3-lan {
 		regulator-boot-on;
 		regulator-min-microvolt = <3300000>;
 		regulator-max-microvolt = <3300000>;
-		vim-supply = <&vcc3v3_sys>;
+		vin-supply = <&vcc3v3_sys>;
 	};
 
 	vcc3v3_sys: vcc3v3-sys {