[PATCH] nvme: Allow controllers to specify a min queue depth for CMB

[Christoph Hellwig]

Hi Jon,

this patch confuses me for æ few reasons:

 - please don't overload the quirks bitmap with actual values
 - why do we even need to set a size instead of using up the CMB
   size?
 - why do we even need to add a quirk?  I quick look at the spec
   doesn't seem to require us to align the submission queue size
 - this patchs adds a quirk, but no use of it so it's effectively just dead
   code