regulator/mfd: Support for the ROHM BD71847

This adds support for the BD71847 which touches both MFD and regulator.
There's a few other bits and pieces included as some dependency patches
had already been applied so would've required rebasing.
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regulator: bd718xx: rename bd71837 to 718xx

rename bd71837-regulator.c to bd718x7-regulator.c to reflect the
fact that also BD71847 is now supported by the driver.

Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
3 files changed