pinctrl: mvebu: remove the offset property for regmap

The offset property of the pinctrl node, when a regmap is used in the
device tree, was never used nor documented in the binding. Moreover, the
compatible string is enough to let the driver know which offset using.

So this patch removes the property and move the information at the driver
level.
Reviewed-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/mvebu/pinctrl-mvebu.c

@@ -810,21 +810,17 @@ int mvebu_regmap_mpp_ctrl_set(struct mvebu_mpp_ctrl_data *data,
 }
 
 int mvebu_pinctrl_simple_regmap_probe(struct platform_device *pdev,
-				      struct device *syscon_dev)
+				      struct device *syscon_dev, u32 offset)
 {
 	struct mvebu_pinctrl_soc_info *soc = dev_get_platdata(&pdev->dev);
 	struct mvebu_mpp_ctrl_data *mpp_data;
 	struct regmap *regmap;
-	u32 offset;
 	int i;
 
 	regmap = syscon_node_to_regmap(syscon_dev->of_node);
 	if (IS_ERR(regmap))
 		return PTR_ERR(regmap);
 
-	if (of_property_read_u32(pdev->dev.of_node, "offset", &offset))
-		return -EINVAL;
-
 	mpp_data = devm_kcalloc(&pdev->dev, soc->ncontrols, sizeof(*mpp_data),
 				GFP_KERNEL);
 	if (!mpp_data)

drivers/pinctrl/mvebu/pinctrl-mvebu.h

@@ -210,6 +210,6 @@ int mvebu_regmap_mpp_ctrl_set(struct mvebu_mpp_ctrl_data *data, unsigned pid,
 int mvebu_pinctrl_probe(struct platform_device *pdev);
 int mvebu_pinctrl_simple_mmio_probe(struct platform_device *pdev);
 int mvebu_pinctrl_simple_regmap_probe(struct platform_device *pdev,
-				      struct device *syscon_dev);
+				      struct device *syscon_dev, u32 offset);
 
 #endif