regmap: rbtree: Factor out node allocation
authorMark Brown <broonie@opensource.wolfsonmicro.com>
Wed, 8 May 2013 12:55:24 +0000 (13:55 +0100)
committerMark Brown <broonie@opensource.wolfsonmicro.com>
Sun, 12 May 2013 14:46:47 +0000 (18:46 +0400)
In preparation for being slightly smarter about how we allocate memory
factor out the node allocation.

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

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