l1sap.h: fix wrong L1SAP_FN2PTCCHBLOCK calculation according to TS 45.002 Table 6
l1sap.h: fix wrong L1SAP_FN2PTCCHBLOCK calculation according to TS 45.002 Table 6

We have seen that the DSP time to time rejects PTCCH message from BTS due to invalid block number.
As a result, we patched FN2PTCCHBLOCK calculation according TS 45.0002 Table 6.


Change-Id: I8be1c8b9159c94788857c6de5440a418739f1212

osmocom/osmo-bts,osmocom/osmo-bts,osmocom/osmo-bts