net: usb: qcusbnet: Add support for stingray modem

net: usb: qcusbnet: Add support for stingray modem

1. Implement reset_resume
2. Remove hardcoding of qmi to interface 0
3. Correctly assign bulk in and out endpoints
4. Change ethernet interface name from usbX to qmiX to remove conflicts with other drivers
5. Assign individual MAC address to each ethernet interface
6. Modify the usb device table to include subclass interface ids for motorola products
7. Remove any hardcoded interface, endpoint numbers

Change-Id: I3b08a5b0acb841e38177cdd758a16f32913246bb
Signed-off-by: Srinivas Gowrishetty <srinivas.gowrishetty@motorola.com>