[PATCH 0/3] [V6] Add support for GPG signature enforcement on booted

[Timothy Pearson]

V5 -> V6
 * Consolidate lockdown checks in NCUI
 * Remove duplicate line from prior rebase

V4 -> V5
 * Rebase against openpower development branch
 * Fix kernels not booting due to faulty code modification in V4

V3 -> V4
 * Move remaining gpg-specific code from boot.c into gpg.c
 * Split disabling of command line when lockdown is active
   into a separate patch

V2 -> V3
 * Move gpgme-specific functions into separate source file

V1 -> V2
 * Add kernel argument signature verification
 * Hardcode reboot instead of exit if lockdown engaged
 * Respect 80-character limit
 * Minor fixes for style / code flow issues noted