bts: Fix race condition during init_rsl receiving from multiple TRX

When several TRX are set up, it can be that in between a RSLEM_EV_TRX_UP
event and the related tr_RSL_RF_RES_IND for that TRX, we receive a
RSLEM_EV_TRX_UP from another TRX which got just connected in parallel.

Change-Id: I1296c76c1d97e6704340484994ff3921975146b9
1 file changed