pmdomain: mediatek: Unify configuration for infracfg and smi

pmdomain: mediatek: Unify configuration for infracfg and smi

Use flags to distinguish between infracfg and smi subsystem for a bus
protection configuration. It simplifies enabling/disabling and prepares
the driver for the use of another regmap for mt8365.

Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Alexandre Mergnat <amergnat@baylibre.com>
Tested-by: Alexandre Mergnat <amergnat@baylibre.com>
Link: https://lore.kernel.org/r/20230918093751.1188668-6-msp@baylibre.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>