regulator: rtmv20: Add DT-binding document for Richtek RTMV20

Add DT-binding document for Richtek RTMV20

Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
Link: https://lore.kernel.org/r/1601277584-5526-2-git-send-email-u0084500@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
1 file changed