[Buildroot] [PATCH] Remvoed dm (devicemapper), this is included in the new lvm2 package

[Nigel Kukard]

> the lvm2 suite has many files and the binary is *big*, so please include 
> some logic to only install dmsetup like the patch in Bug#241 had.
>   
Your patch is a whole log more complete than mine, I'll check it out and
submit it to be committed if everything is 100%.

-N