Add PID argument to aie mem and reg read/write apis

[rbramand-xilinx]

Problem solved by the commit

Added PID argument to aie debug apis to uniquely identify hw ctx
Reverted PR - #8192 that removed printing PID in xrt-smi o/p to get PID info
On Linux PID info is already available but on windows implementation is different, created CR to get PID info on windows - https://jira.xilinx.com/browse/CR-1204588

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

Ignoring the PID check if it is -1 as windows flow doesn't provide PID info yet and returns -1 at present.

Risks (if any) associated the changes in the commit

Low

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

Tested the flow on both Linux and windows and the apis work as expected.

Documentation impact (if any)

Added doxygen comment for the arg added

[stsoe]

For pid argument, can we use pid_t? If you include core/include/types.h there is a typedef even for windows.

[hackwa]

looks good! If our tool can grab it from xrt-smi, that will work for us.

[AShivangi]

Please use this ticket to track this change

[AShivangi]

We don't want to print -1 for Ryzen devices. Please do something like:

const auto device_class = xrt_core::device_query_default<xrt_core::query::device_class>(dev, xrt_core::query::device_class::type::alveo);
  switch (device_class) {
  case xrt_core::query::device_class::type::alveo:
  {
    hw_context.get<std::string>("pid"),
    break;
  }

and print this field only if it is populated

[rbramand-xilinx]

Hi @AShivangi , I have already filed a CR to get this info on windows - https://jira.xilinx.com/browse/CR-1204588
If we dont print PID in case of Ryzen devices then users can't provide PID arg and the debug apis behavior will be different on different platforms. So added changes this way.
But that said I am holding off this PR till PID support is added in windows, there is discussion going on this and if it is difficult to provide PID in MCDM flow they will provide some unique identifier in its place.

[AShivangi]

Ok, sounds good!