Changes

xua_rkm: Make sure existing AS gets added in list to receive ASP-INACTIVE.ind event

Eg. if a 2nd ASP tries to register against a given AS (RFC 4666 5.1.3),
it should still update the AS to tell it the ASP is in ASP-INACTIVE
state. This way depending on traffic mode, the AS state may change as
well.

Change-Id: I85948ab98623a8a53521eb2d2e84244011b39a93