[PATCH] drm: fixed bug regarding minimal buffer size

[Ray Strode]

Hi,
> Ah, I thought I pasted it in....  My mistake.  Here it is, for real this
> time :)
I pushed this with minor changes.  Basically, I made the minimum width
1x1 instead of 2x2, since 2x2 seems more "magic" and I don't think
it's actually required.  If i'm wrong, and things still fail for you,
let me know and I'll do a follow up commit.

--Ray