[+] Rootfs: Add mobile-noauth-lte ppp peer for Huawey lte modems.

Signed-off-by: Anton Sergeev <Anton.Sergeev@elecard.ru>
[+] Rootfs: Return default route rule and previous resolv.conf on modem disconnect.

Signed-off-by: Anton Sergeev <Anton.Sergeev@elecard.ru>
[*] Kernel+Rootfs: Add support for Huawey E392, E3272, E3276 lte modems in option driver and in usb_modeswitch.

Signed-off-by: Anton Sergeev <Anton.Sergeev@elecard.ru>