Add support for building with meson

Follow the OpenBMC herd and support a modern, comprehensible build framework.

To build with meson:
   meson build
   ninja -C build

The OpenBMC CI scripts look for meson.build before looking for CMakelists so
approval of this patch would change the build system during CI to meson.

Signed-off-by: Tom Joseph <tomjoseph@in.ibm.com>
Change-Id: I23d023d8db8048579926231841f497366ab3d516
5 files changed