dt-bindings: Fix maintainer email for a few ROHM ICs

The email backend used by ROHM keeps labeling patches as spam. This can
result to missing the patches.

Switch my mail address from a company mail to a personal one.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/7986d30480df6179a3989fba4cd13817738635c5.1669877740.git.mazziesaccount@gmail.com