[Intel-gfx] [PATCH v1] sna: fix of byteswap.h absence on bsd

[Chris Wilson]

Quoting Sergii Romantsov (2019-01-10 09:42:45)
> OpenBSD, FreeBSD and NetBSD don't contains file byteswap.h.
> Used specifics of them.
> 
> Fixes: 746ab3bb131d (sna: Added AYUV format support for textured and sprite video adapters.)
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=109268
> CC: Stanislav Lisovskiy <stanislav.lisovskiy at intel.com>
> CC: Chris Wilson <chris at chris-wilson.co.uk>
> Signed-off-by: Sergii Romantsov <sergii.romantsov at globallogic.com>

Pushed, thanks for the compile fix.
-Chris