arm64: dts: armada-3720-turris-mox: fix SFP binding

The sfp compatible should be 'sff,sfp', not 'sff,sfp+'. We used patched
kernel where the latter was working.

Fixes: 7109d817 ("arm64: dts: marvell: add DTS for Turris Mox")
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Cc: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>

arch/arm64/boot/dts/marvell/armada-3720-turris-mox.dts

@@ -95,7 +95,7 @@ sdhci1_pwrseq: sdhci1-pwrseq {
 	};
 
 	sfp: sfp {
-		compatible = "sff,sfp+";
+		compatible = "sff,sfp";
 		i2c-bus = <&i2c0>;
 		los-gpio = <&moxtet_sfp 0 GPIO_ACTIVE_HIGH>;
 		tx-fault-gpio = <&moxtet_sfp 1 GPIO_ACTIVE_HIGH>;