x220/x220t - whiptail can't add created GPG key to running BIOS

Strange.

it works only if i do it manually.
1.boot to recovery shell
2. bin/mount-usb (copy *.asc and *.rom from usb drive)
3. bin/gpg-gui.sh (add gpg key tp standalone bios image + flash)
4. bin/flash.sh (remove double quotes from chip name)
5. flash
6. add checksums
7. cat *.asc | gpg2 --import-key (for default boot)
8. Everythings works.

Solved

#592
#672