Adding Platform specific PDR support

- Adding platform check to generate pdr based on platform type.

- Currently PDR generation is happening based on default
  configuration, so this commit adds support to generate PDR's based
  in the platform type.

Testing:
- Added traces and check from which path the files has been taken for
  pdr generation.
- Removed power supply from default path and oem layer and identified
  that power supply pdr is not generating.

Change-Id: I6bedf06be7392e02c1ad32af7a552a5a4d6d42c0
Signed-off-by: Kamalkumar Patel <kamalkumar.patel@ibm.com>