bts-trx: Fix no NM Radio{Carrier,Channel} switching to Enabled if one TRX is rf_locked

Differentiate in each TRX between being provisioned (configuration available) and being provisioned *plus enabled*.
TRX0 waits for all other TRX to be ready before sending POWERON, since
all TRX need to have been minimally configured over TRXC before POWERON
is called. This "ready" state though, doesn't necessarily mean the
TRX!=0 are enabled (aka NM Enabled and rf_locked=0). With them being
configured it es enough to start the whole PHY.

With the old logic, given any TRX was rf_locked=1 at startup, the PHY
would not become UP because it the TRX_PROV FSM was waiting for OPSTART
to arrive on all TRX, which wouldn't happen on TRX that had rf_locked=1.

So in summary, the desired requirements to start the PHY are (in any
order):
1- Wait all TRX are configured
2- Wait for TRX0 OPSTART

Related: SYS#6370
Change-Id: Ie4836f5721ce8227a63c267730aeb17228994214
---
M src/osmo-bts-trx/trx_provision_fsm.c
1 file changed, 49 insertions(+), 17 deletions(-)