Create below regdb file in core component and move the code from
reg_services.c file.
These files has only MCL specific code.
reg_db_lte.c: this file has LTE feature code.
reg_host_11d.c: this file has 11d feature code.
reg_opclass.c: this file has opclass related code.
reg_getset.c: this file has the functions related to setting and getting
regdb related variables.
reg_callbacks.c: this file has regdb callbacks/notificatoion functions.
Change-Id: Ie43acc03a5c35200f3e43bc978b792d5047eeb77
CRs-Fixed: 2349173