* trxcon: make l1ctl_tx_dt_ind() accept const pointers
* trxcon: use abstract API for RACH primitives
* trxcon: allocate a prim in l1sched_prim_push()
* trxcon: fix uint8_t used for length in l1sched_prim_alloc()
* trxcon: return prim pointer from l1sched_prim_alloc()
* trxcon: rename l1sched_prim_init() to l1sched_prim_alloc()
* 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