linux: Update to v4.2.1-openpower1
This brings in the 4.2.1 stable release, and the accraid RAID driver for
PMC-Sierra RAID on Habanero.
The RAID driver is submitted upstream to the linux-scsi mailing list,
but is not yet in a tree.
The stable release brings in a few commits that are of interest to
OpenPower platforms:
94d718d024e xfs: return errors from partial I/O failures to files
2937b784b19 xfs: Fix file type directory corruption for btree directories
95310b79776 libxfs: readahead of dir3 data blocks should use the read verifier
0a3b19cef4f sched: Fix cpu_active_mask/cpu_online_mask race
Signed-off-by: Joel Stanley <joel@jms.id.au>
25 files changed