pldm: srcrev bump 497665acdb..881cde1830

Deepak Kodihalli (1):
      build: remove autotools support

John Wang (1):
      oem: ibm: Fix UT case ConfigNotExit

(From meta-phosphor rev: 1ee73b62596d07b36af1c949fffdf84ee60ce9e2)

Change-Id: Ia0f4a888ec2c6642d8e469f8bf9dcea289a395d5
Signed-off-by: Andrew Geissler <openbmcbump-github@yahoo.com>
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>