pinctrl: single: add marvell,pxa1908-padconf compatible

Add the "marvell,pxa1908-padconf" compatible to allow migrating to a
separate pinctrl driver later.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Duje Mihanović <duje.mihanovic@skole.hr>
Link: https://lore.kernel.org/20241104-pxa1908-lkml-v13-3-e050609b8d6c@skole.hr
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/pinctrl-single.c

@@ -1966,6 +1966,7 @@ static const struct pcs_soc_data pinconf_single = {
 };
 
 static const struct of_device_id pcs_of_match[] = {
+	{ .compatible = "marvell,pxa1908-padconf", .data = &pinconf_single },
 	{ .compatible = "ti,am437-padconf", .data = &pinctrl_single_am437x },
 	{ .compatible = "ti,am654-padconf", .data = &pinctrl_single_am654 },
 	{ .compatible = "ti,dra7-padconf", .data = &pinctrl_single_dra7 },