[Intel-gfx] [PATCH i-g-t] tools: Add intel_vbt_defs.h to Makefile.sources

[Arkadiusz Hiler]

On Wed, Aug 30, 2017 at 01:30:16PM +0300, Arkadiusz Hiler wrote:
> So is will be picked up for the distributable tarball.
> 
> Fixes: 09f35ea4dc06 ("tools/intel_vbt_decode: start migrating to kernel intel_vbt_defs.h")
> Signed-off-by: Arkadiusz Hiler <arkadiusz.hiler at intel.com>

Pushed with Jani's ack from the IRC to stop post-merge CI failing on
distcheck.

-- 
Cheers,
Arek