fix: additional fixups for UNVR/UNVRPro

* Fixup fan control so it works on UNVR
* Add LED integration work for UNVR
* Rename our mtd-ro kernel module dir
* Fixup shortnames in ubnteeprom

tools/ubnt-mtd-lock/Kbuild

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+obj-m := ubnt-mtd-lock.o

tools/ubnt-mtd-lock/README.md

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+# ubnt-mtd-lock
+
+A stupid basic kernel module to ensure we set /dev/mtd* as RO (fully) in our firmware. This is done to prevent users/bad actors from wiping your bootloader/Unifi EEPROM, which are required for your device to function!
+
+## Building
+
+    make -C ${kernel_source_dir} M=$PWD
+
+## License
+
+This code is licensed under the GNU General Public License, version 2. A copy of said license can be found at [https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html#SEC1](https://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html#SEC1)

tools/ubnt-mtd-lock/ubnt-mtd-lock.c

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+/*
+ * Copyright (C) 2024 Chris Blake <chrisrblake93@gmail.com>
+ *
+ * Inspired by mtd-rw: https://github.com/jclehner/mtd-rw/tree/master
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+ 
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/mtd/mtd.h>
+#include <linux/err.h>
+
+#ifndef MODULE
+#error "uvnt-mtd-lock must be compiled as a module."
+#endif
+
+#define MOD_INFO KERN_INFO "ubnt-mtd-lock: "
+#define MOD_ERR KERN_ERR "ubnt-mtd-lock: "
+
+static int set_readonly(unsigned n)
+{
+	struct mtd_info *mtd = get_mtd_device(NULL, n);
+	int err;
+
+	if (IS_ERR(mtd)) {
+		if (PTR_ERR(mtd) != -ENODEV) {
+			printk(MOD_ERR "error probing mtd%d %ld\n", n, PTR_ERR(mtd));
+		}
+		return PTR_ERR(mtd);
+	}
+
+	err = -EEXIST;
+
+	if (mtd->flags & MTD_WRITEABLE) {
+		printk(MOD_INFO "setting mtd%d \"%s\" readonly\n", n, mtd->name);
+		mtd->flags &= ~MTD_WRITEABLE;
+		err = 0;
+	}
+
+	put_mtd_device(mtd);
+	return err;
+}
+
+int ubnt_mtd_lock_init(void)
+{
+	int i, err;
+
+    /* For all MTD partitions, go RO. Assume <15 for UNVR/UNVRPRO, as UNVR OG has 10 */
+	for (i = 0; i < 15; ++i) {
+		err = set_readonly(i);
+		if (err == -ENODEV) {
+			break;
+		}
+	}
+
+	return 0;
+}
+
+void ubnt_mtd_lock_exit(void)
+{
+     /* Do nothing, we wanna keep mtd locked!!! */
+}
+
+module_init(ubnt_mtd_lock_init);
+module_exit(ubnt_mtd_lock_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Chris Blake <chrisrblake93@gmail.com>");
+MODULE_DESCRIPTION("Unifi UNVR/UNVRPRO driver to force MTD partitions RO");
+MODULE_VERSION("1");