openpower-hw-diags: srcrev bump 792f32f707..b797b3e185

Ben Tyner (2):
      Allow building locally without phosphor-logging
      Normalize includes relative to source root

(From meta-openpower rev: 4d23102e66e811015dcdaa362326d9dfd67975c8)

Change-Id: I251990b0258b6223050a6e6927e386f4f8613258
Signed-off-by: Andrew Geissler <openbmcbump-github@yahoo.com>
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>