witherspoon: Add support for GPU FRUS

-commit #f24faab provides basic infra for FRUs which are accessible
through host but host is not sending the details for those FRUs.

-GPU FRUs are of type mentioned at commit #f24faab.This commit
hardcodes the WITHERSPOON GPU FRU info into YAML.

Change-Id: I783bf77d8e95abf687d2605e2c97a5bb10504c70
Signed-off-by: Nagaraju Goruganti <ngorugan@in.ibm.com>
2 files changed