[qca-nss-clients] updated NETLINK message header

Added a user callback field to the common message header
of NETLINK. This will allow user space applications to store
per command callback in the message.

Change-Id: I3b13bcf56fec4edd3141d553c97650fadae369e1
Signed-off-by: Samarjeet Banerjee <banerjee@codeaurora.org>
3 files changed