Dell E7240 Webcam

[Sean Bruno]

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I'm not sure what I need to do to reliably get webcamd to attach to this
laptop's webcam.  When starting webcamd manually, it doesn't find/attach
to this device.  If I explicitly attach to it, it works great with
cheese, so it is definitely supported.

# usbconfig -d ugen0.2 dump_device_desc
ugen0.2: <LaptopIntegratedWebcamHD CN07YYTT7248744FAELWA00> at usbus0,
cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON (500mA)

  bLength = 0x0012
  bDescriptorType = 0x0001
  bcdUSB = 0x0200
  bDeviceClass = 0x00ef  <Miscellaneous device>
  bDeviceSubClass = 0x0002
  bDeviceProtocol = 0x0001
  bMaxPacketSize0 = 0x0040
  idVendor = 0x0c45
  idProduct = 0x64d2
  bcdDevice = 0x3506
  iManufacturer = 0x0002  <CN07YYTT7248744FAELWA00>
  iProduct = 0x0001  <Laptop_Integrated_Webcam_HD>
  iSerialNumber = 0x0000  <no string>
  bNumConfigurations = 0x0001

# webcamd -N LaptopIntegratedWebcamHD-CN07YYTT7248744FAELWA00 -S unknown
-M 0
Attached to ugen0.2[0]
Creating /dev/video0
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