pass: rescon: Encapsulate struct pass_rescon to prevent direct access

pass: rescon: Encapsulate struct pass_rescon to prevent direct access

Any modules are able to access the internal fields of struct pass_rescon
directly. It might make the problem on later and the current method
is not proper. So that move the defintion of struct pass_rescon
into src/pass/pass-rescon.c to prevent the direct access.
Instead, provide the getter/setter function for fields of struct pass_rescon.

Change-Id: I801452d0b8ae98146a74f2ebd1926f6cc4c8c47a
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>