qrtr: Allow net bind service capabilities

It is unlikely that any QTI products will allow the usage of NET_ADMIN
and SYS_ADMIN because of how much control those groups give. Reduce
the requirements for configuring the node id and add NET_BIND_SERVICE
capabilities as a permission option.

Change-Id: I31919d52fa476ca2a34b82b890f2fb110381b957
Signed-off-by: Chris Lew <clew@codeaurora.org>