regmap: Add functions to check for access on registers
authorMark Brown <broonie@opensource.wolfsonmicro.com>
Wed, 10 Aug 2011 08:14:41 +0000 (17:14 +0900)
committerMark Brown <broonie@opensource.wolfsonmicro.com>
Sun, 14 Aug 2011 10:51:11 +0000 (19:51 +0900)
We're going to be using these in quite a few places so factor out the
readable/writable/volatile/precious checks.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

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