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: 20882971 (pinctrl: pinctrl-tps6594: Add TPS65224 PMIC pinctrl and GPIO)
Signed-off-by: Thomas Richard <thomas.richard@bootlin.com>
Link: https://lore.kernel.org/r/20240603082110.2104977-1-thomas.richard@bootlin.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/pinctrl-tps6594.c

@@ -486,6 +486,7 @@ static int tps6594_pinctrl_probe(struct platform_device *pdev)
 		break;
 	case TPS6593:
 	case TPS6594:
+	case LP8764:
 		pctrl_desc->pins = tps6594_pins;
 		pctrl_desc->npins = ARRAY_SIZE(tps6594_pins);