usb: gadget: langwell: use generic map/unmap functions
authorFelipe Balbi <balbi@ti.com>
Mon, 19 Dec 2011 09:48:24 +0000 (11:48 +0200)
committerFelipe Balbi <balbi@ti.com>
Tue, 28 Feb 2012 12:49:05 +0000 (14:49 +0200)
those routines have everything we need to map/unmap
USB requests and it's better to use them.

Signed-off-by: Felipe Balbi <balbi@ti.com>

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