mac80211: fix rt2x00 build error on 6.12

Fix missing remove callback type signature conversion

Signed-off-by: Felix Fietkau <nbd@nbd.name>

package/kernel/mac80211/patches/rt2x00/110-wifi-rt2x00-fix-remove-callback-type-mismatch.patch

@@ -0,0 +1,42 @@
+From: Felix Fietkau <nbd@nbd.name>
+Date: Sun, 6 Jul 2025 11:15:13 +0200
+Subject: [PATCH] wifi: rt2x00: fix remove callback type mismatch
+
+The function is used as remove callback for a platform driver.
+It was missed during the conversion from int to void
+
+Fixes: 0edb555a65d1 ("platform: Make platform_driver::remove() return void")
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/drivers/net/wireless/ralink/rt2x00/rt2x00soc.c
++++ b/drivers/net/wireless/ralink/rt2x00/rt2x00soc.c
+@@ -108,7 +108,7 @@ exit_free_device:
+ }
+ EXPORT_SYMBOL_GPL(rt2x00soc_probe);
+ 
+-int rt2x00soc_remove(struct platform_device *pdev)
++void rt2x00soc_remove(struct platform_device *pdev)
+ {
+ 	struct ieee80211_hw *hw = platform_get_drvdata(pdev);
+ 	struct rt2x00_dev *rt2x00dev = hw->priv;
+@@ -119,8 +119,6 @@ int rt2x00soc_remove(struct platform_dev
+ 	rt2x00lib_remove_dev(rt2x00dev);
+ 	rt2x00soc_free_reg(rt2x00dev);
+ 	ieee80211_free_hw(hw);
+-
+-	return 0;
+ }
+ EXPORT_SYMBOL_GPL(rt2x00soc_remove);
+ 
+--- a/drivers/net/wireless/ralink/rt2x00/rt2x00soc.h
++++ b/drivers/net/wireless/ralink/rt2x00/rt2x00soc.h
+@@ -17,7 +17,7 @@
+  * SoC driver handlers.
+  */
+ int rt2x00soc_probe(struct platform_device *pdev, const struct rt2x00_ops *ops);
+-int rt2x00soc_remove(struct platform_device *pdev);
++void rt2x00soc_remove(struct platform_device *pdev);
+ #ifdef CONFIG_PM
+ int rt2x00soc_suspend(struct platform_device *pdev, pm_message_t state);
+ int rt2x00soc_resume(struct platform_device *pdev);