Add an attribute QCA_WLAN_VENDOR_ATTR_OEM_DEVICE_INFO to send
additional information to specify whether the OEM vendor command
is for vdev or pdev.
This optional attribute is used to specify whether the device
type is vdev or pdev. This attribute can be omitted when the
command is for vdev.
Change-Id: Ie6f72d071d1d8393d2c9bf47d7b47a9dd2cbbeed
CRs-Fixed: 2693894