ARM: dts: armada-38x: Fix compatible string for gpios

Armada 38x supports per CPU interrupts for gpios, like Armada XP. Pre-XP
variants like Armada 370 do not support per CPU interrupts for gpios.

So change compatible string for Armada 38x from "marvell,armada-370-gpio"
which indicates pre-XP variant to "marvell,armadaxp-gpio" which indicates
XP variant or new.

Driver gpio-mvebu.c which handles both pre-XP and XP variants already
provides support for per CPU interrupts on XP and newer variants.

Signed-off-by: Pali Rohár <[e-mail]>
Fixes: 7cb2acb3fbae ("ARM: dts: mvebu: Add PWM properties for armada-38x")
Acked-by: Uwe Kleine-König <[e-mail]>
Signed-off-by: Gregory CLEMENT <[e-mail]>

arch/arm/boot/dts/armada-38x.dtsi

···
 			};
 
 			gpio0: gpio@18100 {
-				compatible = "marvell,armada-370-gpio",
+				compatible = "marvell,armadaxp-gpio",
 					     "marvell,orion-gpio";
 				reg = <0x18100 0x40>, <0x181c0 0x08>;
 				reg-names = "gpio", "pwm";
···
 			};
 
 			gpio1: gpio@18140 {
-				compatible = "marvell,armada-370-gpio",
+				compatible = "marvell,armadaxp-gpio",
 					     "marvell,orion-gpio";
 				reg = <0x18140 0x40>, <0x181c8 0x08>;
 				reg-names = "gpio", "pwm";