Move rrc_update_ue_pcell() from static function in rrc_gNB.c to public
function in rrc_cell_management.c, making it reusable across RRC code
paths. Replace duplicate PCell addition logic in handover paths
(intra-CU and inter-CU) and RRCSetup path with calls to this shared
function.
This eliminates code duplication between handover and RRCSetup paths,
centralizes PCell update logic (including cleanup of old PCell's DU
serving cells) in a single reusable function and makes the function
available for future use in other RRC procedures
Guido Casati
372f121cf6