mediatek: filogic: fix supported_devices list for gl-mt2500

mediatek: filogic: fix supported_devices list for gl-mt2500

The SUPPORTED_DEVICES sets for both Maxlinear (v1) and Airoha (v2)
devices were identical, so sysupgrade was unable to detect when an
incorrect image was being installed.  This caused "soft bricking" of
devices when a v1 image was installed on a v2 device, and vice versa.

Fix this by making the supported_devices distinct for each device
version, by renaming the devices with a version-specific name.
This is reflected in the file name and the image metadata.

Fixes: https://github.com/openwrt/openwrt/issues/20566
Fixes: https://github.com/openwrt/asu/issues/1525
Signed-off-by: Eric Fahlgren <ericfahlgren@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/20632
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>