Commit d5ad34f7 "regulator: Implement devm_regulator_free()"
actually implements devm_regulator_put.
Thus rename devm_regulator_free to devm_regulator_put.

Also add empty devm_regulator_put for !CONFIG_REGULATOR
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>