srs/amarisoft{ue,enb}: Fix b200 specific rf_dev_args

Commit 12ae6d79a5b53a213f619999ef0230c1dae88bb7 switched the rf_dev_type
to be in lowercase but forgot to change these conditions.

Change-Id: I91d3877381b4e6343dc4aa0465e699341ed6648d
5 files changed