Merge tag 'spi-fix-v4.10-rc4' into spi-linus

spi: Fixes for v4.10

The usual small smattering of driver specific fixes.  A few bits that
stand out here:

 - The R-Car patches adding fallbacks are just adding new compatible
   strings to the driver so that device trees are written in a more
   robustly future proof fashion, this isn't strictly a fix but it's
   just new IDs and it's better to get it into mainline sooner to
   improve the ABI.
 - The DesignWare "switch to new API part 2" patch is actually a
   misleadingly titled fix for a bit that got missed in the original
   conversion.

# gpg: Signature made Thu 19 Jan 2017 14:54:15 GMT
# gpg:                using RSA key ADE668AA675718B59FE29FEA24D68B725D5487D0
# gpg:                issuer "broonie@kernel.org"
# gpg: key 0D9EACE2CD7BEEBC: no public key for trusted key - skipped
# gpg: key 0D9EACE2CD7BEEBC marked as ultimately trusted
# gpg: key CCB0A420AF88CD16: no public key for trusted key - skipped
# gpg: key CCB0A420AF88CD16 marked as ultimately trusted
# gpg: key 162614E316005C11: no public key for trusted key - skipped
# gpg: key 162614E316005C11 marked as ultimately trusted
# gpg: key A730C53A5621E907: no public key for trusted key - skipped
# gpg: key A730C53A5621E907 marked as ultimately trusted
# gpg: key 276568D75C6153AD: no public key for trusted key - skipped
# gpg: key 276568D75C6153AD marked as ultimately trusted
# gpg: Good signature from "Mark Brown <broonie@sirena.org.uk>" [ultimate]
# gpg:                 aka "Mark Brown <broonie@debian.org>" [ultimate]
# gpg:                 aka "Mark Brown <broonie@kernel.org>" [ultimate]
# gpg:                 aka "Mark Brown <broonie@tardis.ed.ac.uk>" [ultimate]
# gpg:                 aka "Mark Brown <broonie@linaro.org>" [ultimate]
# gpg:                 aka "Mark Brown <Mark.Brown@linaro.org>" [ultimate]