regmap: clairify meaning of max_register

The exact meaning of max_register is not entierly clear. Follow
the common wording and use "address" instead of "index".

Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Stefan Agner 2016-01-19 17:14:39 -08:00 • committed by Mark Brown
commit b429fab446