pinctrl: renesas: rzv2m: Fix type in .pin_config_group_get() callback

On 64-bit platforms, "unsigned long" is 64-bit.  Hence checking if all
"unsigned long" configuration values are equal should be done using an
"unsigned long" temporary.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/4bcb78b40d685b0aab8c3150d379240ffb765b37.1777562725.git.geert+renesas@glider.be

Author: geertu

drivers/pinctrl/renesas/pinctrl-rzv2m.c

@@ -695,8 +695,9 @@ static int rzv2m_pinctrl_pinconf_group_get(struct pinctrl_dev *pctldev,
 					   unsigned int group,
 					   unsigned long *config)
 {
+	unsigned long prev_config = 0;
 	const unsigned int *pins;
-	unsigned int i, npins, prev_config = 0;
+	unsigned int i, npins;
 	int ret;
 
 	ret = pinctrl_generic_get_group_pins(pctldev, group, &pins, &npins);