sen <lars@metafoo.de> 1320773845 +0100
committer Mark Brown <broonie@opensource.wolfsonmicro.com> 1320800211 +0000

regmap: Add helper function for checking if a register range is volatile

We already have the same code for checking whether a register range is volatile
in two different places. Instead of duplicating it once more  add a small helper
function for checking whether a register range is voltaile.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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