Both targets miss a subtarget causing an image naming style which is
different from other all othe targets, even tho it already uses
`x/generic/` as subfolder as if the subtarget would exist.
This commit adds the Generic subtarget resulting in consistent naming.
~/src/openwrt/openwrt/bin/targets/ipq806x/generic$ ls
openwrt-ipq806x-generic-netgear_d7800-initramfs-uImage
openwrt-ipq806x-generic-netgear-d7800.manifest
openwrt-ipq806x-generic-netgear_d7800-squashfs-factory.img
openwrt-ipq806x-generic-netgear_d7800-squashfs-sysupgrade.bin
CC: John Crispin <john@phrozen.org>
Signed-off-by: Paul Spooren <mail@aparcar.org>
(cherry picked from commit 853e4dd306)
