Add support for 7412

[mweinelt]

Boot initramfs via FTP, scp sysupgrade image, connect via SSH and sysupgrade.

Environment:

HWRevision            209
HWSubRevision         1
ProductID             Fritz_Box_HW209
SerialNumber          0000000000000000
annex                 B
autoload              yes
bootloaderVersion     1.2834
bootserport           tty0
cpufrequency          500000000
firstfreeaddress      0x811FB68C
firmware_info         137.06.84
firmware_version      1und1
flashsize             nor_size=0MB sflash_size=0KB nand_size=128MB
maca                  38:10:D5:F8:4C:61
macb                  38:10:D5:F8:4C:62
macwlan               38:10:D5:F8:4C:63
macwlan2              38:10:D5:F8:4C:64
macdsl                38:10:D5:F8:4C:65
memsize               0x08000000
modetty0              38400,n,8,1,hw
modetty1              38400,n,8,1,hw
mtd0                  0x840000,0x3840000
mtd1                  0x440000,0x840000
mtd2                  0x0,0x40000
mtd3                  0x40000,0x440000
mtd4                  0x0,0x200000
my_ipaddress          192.168.178.1
prompt                Eva_AVM
req_fullrate_freq     250000000
sysfrequency          250000000
urlader-version       3834
usb_board_mac         38:10:D5:F8:4C:66
usb_device_id         0x0000
usb_device_name       USB DSL Device
usb_manufacturer_name  AVM
usb_revision_id       0x0000
usb_rndis_mac         38:10:D5:F8:4C:67
wlan_key              06331952540454981479

[blocktrron]

While we are at it, we should also add openwrt image autodetection.

[abejaranoh]

Hallo, is the 7412 not supported yet?

[mweinelt]

No, its bootloader is not capable of being flashed with the method implemented in fritz-tools.

https://github.com/freifunk-darmstadt/fritz-tools/issues/6#issuecomment-482735288 applies here as well.