gpio: stmfx: Use correct flag values

Set the correct value for open_drain and push_pull modes.

Change-Id: I98873851283d87f75535122543bb731dcfc3471a
Signed-off-by: Cheick TRAORE <cheick.traore-ext@st.com>
Reviewed-on: https://gerrit.st.com/c/mpu/oe/st/u-boot/+/379168
Domain-Review: Amelie DELAUNAY <amelie.delaunay@foss.st.com>
ACI: CIBUILD <MDG-smet-aci-builds@list.st.com>
Reviewed-by: Patrice CHOTARD <patrice.chotard@foss.st.com>
ACI: CITOOLS <MDG-smet-aci-reviews@list.st.com>

Author: chotr4821

drivers/pinctrl/pinctrl-stmfx.c

@@ -178,9 +178,9 @@ static int stmfx_gpio_set_flags(struct udevice *dev, unsigned int offset,
 		if (flags & GPIOD_OPEN_SOURCE)
 			return -ENOTSUPP;
 		if (flags & GPIOD_OPEN_DRAIN)
-			ret = stmfx_conf_set_type(dev, offset, 0);
-		else /* PUSH-PULL */
 			ret = stmfx_conf_set_type(dev, offset, 1);
+		else /* PUSH-PULL */
+			ret = stmfx_conf_set_type(dev, offset, 0);
 		if (ret)
 			return ret;
 		ret = stmfx_gpio_direction_output(dev, offset, value);