fix missing .usage field set in nrfx nor driver

The openocd-0.10.0 release.

The openocd-0.10.0-rc2 release candidate.

The openocd-0.10.0-rc1 release candidate

The openocd-0.9.0 release.

The openocd-0.9.0-rc1 release.

The openocd-0.8.0 release.

The openocd-0.8.0-rc2 release candidate.

The openocd-0.8.0-rc1 release candidate.

The openocd-0.7.0 release.