USB: qcaux: Add Motorola modem UARTs

[Tony Lindgren <tony@atomide.com>]

* Johan Hovold <johan@kernel.org> [181213 12:46]:
> On Thu, Dec 06, 2018 at 07:48:23AM -0800, Tony Lindgren wrote:
> > Yes correct lsusb -v output below with five UARTs with ff/ff/ff and
> > two QMI ports that are already handled with an earlier commit
> > 4071898bf0f4 ("net: qmi_wwan: Add USB IDs for MDM6600 modem on
> > Motorola Droid 4").
> 
> Isn't it four QMI ports even (interfaces 5 through 8)?

Oh right yes it's four QMI ports.

> >       bDescriptorType         4
> >       bInterfaceNumber        4
> >       bAlternateSetting       0
> >       bNumEndpoints           3
> >       bInterfaceClass       255 
> >       bInterfaceSubClass    255 
> >       bInterfaceProtocol    255 
> >       iInterface              0 
> >       Endpoint Descriptor:
> >         bLength                 7
> >         bDescriptorType         5
> >         bEndpointAddress     0x85  EP 5 IN
> >         bmAttributes            3
> >           Transfer Type            Interrupt
> >           Synch Type               None
> >           Usage Type               Data
> >         wMaxPacketSize     0x0040  1x 64 bytes
> >         bInterval               5
> 
> Since the modem (AT) port here has an interrupt endpoint, you should add
> these device ids to the option driver which can handle that.

Oh OK will do.

> As the comment in qcaux suggests, that driver is intended for the diag
> port of some old devices where the modem port was handled by cdc-acm.

OK

> Also, if possible please include the more compact output of usb-devices
> (or /sys/kernel/debug/usb/devices) for the devices you have access to in
> the commit message.

Will do.

Thanks,

Tony