[PATCH] xhci: create one unified function to calculate TRB TD remainder.

[Oliver Neukum]

On Tue, 2015-09-08 at 14:09 +0300, Mathias Nyman wrote:
> Now Mediatek host has an additional quirk on how it uses the TD Size
> field for remaining data. To prevent yet another function for
> calculating
> remainder we instead want to make one quirk friendly unified function.

Could you clarify whether this replaces an existing quirk
or renders unnecessary the introduction of a new quirk,
because that decides whether this patch must go into stable.

	Regards
		Oliver