Build for Netgear R7800

I use the default in LEDE master, which is just that 10.4-3.4-00082:

[   29.764486] ath10k_pci 0000:01:00.0: qca9984/qca9994 hw1.0 target 0x01000000 chip_id 0x00000000 sub 168c:cafe
[   29.764521] ath10k_pci 0000:01:00.0: kconfig debug 0 debugfs 1 tracing 0 dfs 1 testmode 1
[   29.775463] ath10k_pci 0000:01:00.0: firmware ver 10.4-3.4-00082 api 5 features no-p2p,mfp,peer-flow-ctrl,btcoex-param,allows-m
esh-bcast crc32 f301de65

As I have backported the wifi firmware reading changes to 17.01, I use the same firmware version also in my 17.01 build, which fact is visible also above in this thread...