* layer23: Define sim_pin_required field as bool
* layer23: Define barr field as bool
* layer23: Define (r)plmn_valid field as bool
* layer23: Define always_search_hplmn field as bool
* layer23: Define imsi_attached field as bool
* layer23: vty: Rename testsim node functions
* trxcon: move FBSB state from struct l1ctl_link to trxcon_inst
* trxcon: introduce and use struct 'trxcon_inst'
* trxcon: use 'unsigned int tn' for timeslot number
* trxcon: cosmetic: s/app_evt_names/trxcon_fsm_event_names/
* trxcon: fix coding style in statements applying inverted mask
* trx_toolkit/data_msg.py: legacy flag is only for version 0x00
* trx_toolkit/data_msg.py: introduce header coding version 0x01
* trx_toolkit/data_msg.py: implement header version coding