[Skiboot] [PATCH stable 5.1.x 0/3] Fix for various XSCOM issues

[Vipin K Parashar]

This patchset provides fix for various XSCOM related issues.
Below commits from skiboot-master are cherry-picked under this:

15cec49 hw/xscom: Reset XSCOM engine after querying sleeping core FIR
e761222 hw/xscom: Reset XSCOM engine after finite number of retries when busy
9c2d823 xscom: Return OPAL_WRONG_STATE on XSCOM ops if CPU is asleep

Russell Currey (1):
  xscom: Return OPAL_WRONG_STATE on XSCOM ops if CPU is asleep

Vipin K Parashar (2):
  hw/xscom: Reset XSCOM engine after finite number of retries when busy
  hw/xscom: Reset XSCOM engine after querying sleeping core FIR

 doc/opal-api/opal-xscom-read-write-65-66.txt |  5 ++
 hw/xscom.c                                   | 81 ++++++++++++++++++++++------
 include/errorlog.h                           |  1 +
 include/xscom.h                              |  6 +++
 4 files changed, 76 insertions(+), 17 deletions(-)

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2.7.4