regulator: max8997: limit the number of dvs registers programmed in non-dvs mode
In case the gpio based volatage selection mode is not used for either of buck 1/2/5, then only the BUCKxDVS1 register need to be programmed. So determine whether dvs mode is used and limit the loop count appropriately. Signed-off-by: NThomas Abraham <thomas.abraham@linaro.org> Reviewed-by: NTomasz Figa <t.figa@samsung.com> Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
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