hid-xpadneo: Allow building with kernel 6.12

Kernel 6.12 changed the signature of a HID function. We can simply
conditionally use the one or the other based on the kernel version.

Fixes: #498
Signed-off-by: Kai Krakow <kai@kaishome.de>

hid-xpadneo/src/hid-xpadneo.c

@@ -656,7 +656,11 @@ static int xpadneo_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 	return MAP_AUTO;
 }
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(6,12,0)
 static u8 *xpadneo_report_fixup(struct hid_device *hdev, u8 *rdesc, unsigned int *rsize)
+#else
+static const u8 *xpadneo_report_fixup(struct hid_device *hdev, u8 *rdesc, unsigned int *rsize)
+#endif
 {
 	struct xpadneo_devdata *xdata = hid_get_drvdata(hdev);