qcacmn: Add new vendor attribute to send he operation info

Currently he operation info is not sent to user space as
part of the response of get station info command.

Add support to send the he_operation with the new vendor
attribute QCA_WLAN_VENDOR_ATTR_GET_STATION_INFO_HE_OPERATION.

Change-Id: Ib4bab7b7b2aff688293c85f8574d9f2c306f00f0
CRs-Fixed: 2664347