mediatek: add Comfast CF-E395AX support by adding an alternative model name

[db260179]

both these devices share the board and same config, just different model number

Install instructions are the same as the CF-E393AX commit - https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=d8f4453bf2de9fd9baf3d660ed12e0797ff2cfdb