6e5ab1b154
The pistachio U-Boot expects a default configuration with the name
config@1 in the FIT image. The default was changed in OpenWrt some
months ago.
This makes the board boot again.
Fixes: 9f714398e0 ("build: use config-1 instead of config@1 as default")
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>