pinctrl: tps6594: add missing support for LP8764 PMIC

Add missing support for LP8764 PMIC in the probe().

Issue detected with v6.10-rc1 (and reproduced with 6.10-rc2) using a TI
J7200 EVM board.

tps6594-pinctrl tps6594-pinctrl.8.auto: error -EINVAL:
Couldn't register gpio_regmap driver
tps6594-pinctrl tps6594-pinctrl.8.auto: probe with driver tps6594-pinctrl
failed with error -22

Fixes: 208829715917 (pinctrl: pinctrl-tps6594: Add TPS65224 PMIC pinctrl and GPIO)
Signed-off-by: Thomas Richard <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Linus Walleij <[e-mail]>

drivers/pinctrl/pinctrl-tps6594.c

···
 		break;
 	case TPS6593:
 	case TPS6594:
+	case LP8764:
 		pctrl_desc->pins = tps6594_pins;
 		pctrl_desc->npins = ARRAY_SIZE(tps6594_pins);