It is *normal* to receive new CellGroupConfigs from the DU, hence a
warning is not warranted.

- forward capabilities to update CellGroupConfig
- Do not require measConfig/cG_ConfigInfo to be NULL, but ignore them,
  as it is not implemented

The RRC container is to be handled by the msg handler in
mac_rrc_dl_handler.c. Therefore, don't forward the RRC message, but copy
it into the message so the handler can take the action.

The two hardcoded PLMNs are never executed: they are in an if(0) block

Remove previously added bwp_size and bwp_start fields from struct fapi_nr_dl_config_csirs_pdu_rel15_t.
Create function to obtain nfapi_nr_dl_tti_csi_rs_pdu_rel15_t from fapi_nr_dl_config_csirs_pdu_rel15_t without bwp_size and bwp_start.
Replace previously problematic cast with call to created function.

Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

Reset Msg4_ACKed to not schedule ULSCH and DLSCH before RRC Reconfiguration

Before this MR, openair1/PHY/NR_TRANSPORT/nr_ulsch_llr_computation.c:
nr_ulsch_qam64_qam64():
    xmm3 = simde_mm256_max_epi16(bit_met_m5_p1, bit_met_m5_p1);

Should be instead:
    xmm3 = simde_mm256_max_epi16(bit_met_m5_p1, bit_met_m7_p1);