USB: core: Add USB_DEVICE_ERROR uevent for enumeration timeout

Some userspace modules expect USB driver to send event to userspace, when
usb device enumeration failure with device descriptor read errors.
Add USB_DEVICE_ERROR uevent in the USB driver to explicitly send the ERROR
uevent for such case.

Change-Id: I7128869ff0700ab90d4c949de24cd03c5c90e22e
Signed-off-by: Chandana Kishori Chiluveru <cchiluve@codeaurora.org>