Merge branch 'ipa-refactoring'

Alex Elder says:

====================
net: ipa: simple refactoring

This series contains some minor code improvements.

The first patch verifies that the configuration is compatible with a
recently-defined limit.  The second and third rename two fields so
they better reflect their use in the code.  The next gets rid of an
empty function by reworking its only caller.

The last two begin to remove the assumption that an event ring is
associated with a single channel.  Eventually we'll support having
multiple channels share an event ring but some more needs to be done
before that can happen.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>