Xrt MGMT module basic func rename as Mgmtpf prefx

[raghkris]

Problem solved by the commit

In this 2 commits we solved: To differentiate b/w userpf and mgmtpf module function conflicts, we have added structure variable "xrt_class_mgmt" in a mgmt-core.c file. Added bool flag "userpf" to differentiate the conflicts between mgmtpf & userpf when register & unregister the module, added one localclass flag to separate between MGMTPF & USERPF functionalities.

Basic mgmt moduel core fucntion as renamed mgmtpf_ prefix

Bug / issue (if any) fixed, which PR introduced the bug, how it was discovered

How problem was solved, alternative solutions (if any) and why they were rejected

Risks (if any) associated the changes in the commit

What has been tested and how, request additional testing if necessary

Documentation impact (if any)

[gbuildx]

Can one of the admins verify this patch?