Support MA5671A SFP GPON

I haven't tried yet but looks like we do have a Lantiq Falcon openwrt generic build, maybe it will work on the stick and we can put the proprietary blobs in /opt in later? That would be great if we managed to do that.... right now we have uboot source code, kernel code (unconfirmed if it works or not) and blobs files

I just restored by bricked stick by xmodem it with the whole flash dump in uboot then just write it back down the SPI, it's worked again now

EDIT:
I tried to boot my serialflash uboot, the kernel is up but it's panic because it can't find the "root="... dunno why...

EDIT:

Tried to install a newest snapshot openwrt and the uboot can't load the kernel... maybe we need to upgrade uboot

SF: Detected S25FL129P_64K with page size 64 KiB, total 16 MiB
## Booting kernel from Legacy Image at 80f00000 ...
   Image Name:   MIPS OpenWrt Linux-4.19.86
   Created:      2019-12-03  21:41:35 UTC
   Image Type:   MIPS Linux Kernel Image (lzma compressed)
   Data Size:    1775673 Bytes = 1.7 MiB
   Load Address: 80002000
   Entry Point:  80002000
   Verifying Checksum ... Bad Data CRC
ERROR: can't get kernel image!
FALCON =>