i2c: rtl9300: remove const cast

These casts are used to remove const for no good reason. Fix the types
instead.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20251217063027.37987-2-rosenp@gmail.com

Author: neheb

drivers/i2c/busses/i2c-rtl9300.c

@@ -129,7 +129,7 @@ static int rtl9310_i2c_select_scl(struct rtl9300_i2c *i2c, u8 scl)
 
 static int rtl9300_i2c_config_chan(struct rtl9300_i2c *i2c, struct rtl9300_i2c_chan *chan)
 {
-	struct rtl9300_i2c_drv_data *drv_data;
+	const struct rtl9300_i2c_drv_data *drv_data;
 	int ret;
 
 	if (i2c->sda_num == chan->sda_num)
@@ -139,7 +139,7 @@ static int rtl9300_i2c_config_chan(struct rtl9300_i2c *i2c, struct rtl9300_i2c_c
 	if (ret)
 		return ret;
 
-	drv_data = (struct rtl9300_i2c_drv_data *)device_get_match_data(i2c->dev);
+	drv_data = device_get_match_data(i2c->dev);
 	ret = drv_data->select_scl(i2c, i2c->scl_num);
 	if (ret)
 		return ret;
@@ -372,7 +372,7 @@ static int rtl9300_i2c_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct rtl9300_i2c *i2c;
 	struct fwnode_handle *child;
-	struct rtl9300_i2c_drv_data *drv_data;
+	const struct rtl9300_i2c_drv_data *drv_data;
 	struct reg_field fields[F_NUM_FIELDS];
 	u32 clock_freq, scl_num, sda_num;
 	int ret, i = 0;
@@ -399,7 +399,7 @@ static int rtl9300_i2c_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, i2c);
 
-	drv_data = (struct rtl9300_i2c_drv_data *)device_get_match_data(i2c->dev);
+	drv_data = device_get_match_data(i2c->dev);
 	if (device_get_child_node_count(dev) > drv_data->max_nchan)
 		return dev_err_probe(dev, -EINVAL, "Too many channels\n");