Bug#838605: Enable PowerNV MTD modules on POWER systems

["Timothy Pearson" <kb9vqf@pearsoncomputing.net>]

Package: linux-image-4.6.0-1-powerpc64le
Version: 4.6.4-1
Severity: important

The PowerNV MTD module is required for checkstop diagnostics on POWER8 and
higher machines, but it is not enabled in the kernel build.

Please enable it as a module with the following kernel .config lines:
CONFIG_MTD=m
CONFIG_MTD_POWERNV_FLASH=m

Thanks!