[dpdk-stable] [PATCH 0/6] power: fix make build for power apps

[David Hunt <david.hunt@intel.com>]

The power example applications that uses the virtio-serial method of
communication cannot currently be built with make, and can only be built
using meson/ninja.

The guest channel message definitions and functions in guest_channel.h
are needed by applications and need to be made public.

This worked pre-20.11, but now with all the meson/ninja changes, making
these apps externally no longer works. To fix, we need to move the header
file with the API definitions for the channel commands public, and rename
the functions accordingly.

The main change is to rename channel_commands.h to
rte_power_guest_channel.h so that it gets picked up by the installer and
copied to /usr/local/include. Other changes include renaming #defines to
have RTE_ at the beginning instead of CPU_. Finally we refactor the code
to work with those changes.

---
v2 changes
  - re-worked from monolithic patch to a 6 patch patchset for easier review

[PATCH v2 1/6] power: create guest channel public header file
[PATCH v2 2/6] power: make channel msg functions public
[PATCH v2 3/6] power: rename public structs
[PATCH v2 4/6] power: rename defines
[PATCH v2 5/6] power: add new header file to export list
[PATCH v2 6/6] power: clean up includes