openpower-pnor-code-mgmt: srcrev bump b41a57d52c..85f2540759

Adriana Kobylak (2):
      generate-tar: Call mksquashfs with -all-root option
      generate-tar: Set permissions of partition files to read only

(From meta-openpower rev: eb5aad30583a3edb6b2f574a47bd216b13df7e6b)

Change-Id: I3241ae65cb21ee0a1563fe05dfa658bf763d919d
Signed-off-by: Andrew Geissler <openbmcbump-github@yahoo.com>
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>