Validation of GSCAN configuration parameters

validate the GSCAN configuration parameters based on the
capabilities supported by firmware/driver.

Change-Id: Ib020e05a3936972ebd2303f9a338cde276aa6d46
CRs-Fixed: 737270
wcnss_service: Retry qmi client init with port RMNET_0

Qmi client init is failing for port RMNET_1. Therefore
added support to retry qmi client init with RMNET_0.
This is observed after inclusion of feature DPM2.0.

CRs-Fixed: 751795
Change-Id: I4adef22f3233ade85227423bac1076fc2492377a