[radeon agp] add blacklist for thinkpad T40p

[Emil Velikov]

On 30 November 2015 at 19:47, Alex Deucher <alexdeucher at gmail.com> wrote:
> On Sat, Nov 28, 2015 at 4:01 PM, Pavel Machek <pavel at ucw.cz> wrote:
>>
>> Thinkpad T40p needs agpmode 1.
>>
>> Signed-off-by: Pavel Machek <pavel at ucw.cz>
>
> Seems odd that this wouldn't have been found earlier given how popular
> thinkpads are.  Applied.  Thanks,
>
Wondering if it wouldn't be better to apply these restrictions within
the AGP driver. I have a vague recollection that (at least?) some of
these are chipset limitations/bugs ?

Thanks
Emil