It is Other/Proprietary License
license type and it is propriatary to NordicSemiconductor
.
So, you need to set:
LICENSE = "CLOSED"
and remove LIC_FILES_CHKSUM
.
Or, you can create a custom layer for Nordic recipes containing custom-licenses
folder with all their custom license files and then in your layer.conf
:
LICENSE_PATH += "${LAYERDIR}/custom-licenses"
and in your recipe:
LICENSE = "<license_file>"
LIC_FILES_CHKSUM += "<license_file>;md5=<checksum>"
I think creating such layer for Nordic is up to their decision, so setting it to CLOSED
is the best way to go in your case.