Use common log mechanism in layer 3, mapping specific macros to common ones and extending common log utilities to support specific layer3 requirements

- flexran_get_half_duplex()
- flexran_get_intra_sf_hopping()
- flexran_get_type2_sb_1()
- flexran_get_ue_category()
- flexran_get_res_alloc_type1()

- when changing values RC.rrc[i]->configuration should be changed too
- then, RRC_RECONFIGURATION_REQ will pass the changed conf down until PHY
- give warnings at functions that are not implemented

- rename functions
flexran_get_tdd_ack_nack_feedback() -> flexran_get_tdd_ack_nack_feedback_mode()
flexran_get_ue_pmi() -> flexran_get_ue_wpmi()

*Fix the issue with the PDCP UE ID/RNTI management

Fixed bug related to the reporting of timing advance to the controller that severely dropped the performance of the remote scheduler

Signed-off-by: Xenofon Foukas <x.foukas@sms.ed.ac.uk>