BTS_Tests: introduce and use helper f_l1ctl_est_dchan()

This is required for the upcoming test cases running on hopping
channels.  Dealing with module / hopping parameters in every
test case is definitely not a good idea, so let's add a function.

Change-Id: Ia4f078ebbb278246ee117f580ff93f301dc60f7c
Related: SYS#4868, OS#4546
1 file changed