regulator: as3722: Fix off-by-one n_voltages setting for SDx
regulator: as3722: Fix off-by-one n_voltages setting for SDx

AS3722_SDx_VSEL_MAX means the maximum selecter, the n_voltages should be
AS3722_SDx_VSEL_MAX + 1.

Signed-off-by: Axel Lin <b6ffd6973e972cb999e8e535ab74da7fee0c035f@ingics.com>
Acked-by: Laxman Dewangan <8ef6cd53fa4ede16d655e2562b753173823989c1@nvidia.com>
Signed-off-by: Mark Brown <b51b9a92386687a9ac927cebfa0f978adeb8cea5@linaro.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs