bts: Add TC_sacch_chan_act() to test SACCH INFO at RSL CHAN ACT

According to 3GPP Ts 48.058, every logical channel can receive some
specific SACCH filling at the time of RSL channel activation.  This
overrides the global SACCH FILLING.

Related: OS#3750
Change-Id: I8adb371a7e0b80792dd2fa35e5204802068df5ba
2 files changed