Build: Compile connection based psa ns api when necessary

When there is any connection based service, tfm_psa_ns_connection_api.c
needs to be compiled.

Signed-off-by: Xinyu Zhang <xinyu.zhang@arm.com>
Change-Id: I0d74b1605b7979ddc33f04df0d48d96d8807d7d9
1 file changed