reset: replace boolean parameters with flags parameter

Introduce enum reset_control_flags and replace the list of boolean
parameters to the internal reset_control_get functions with a single
flags parameter, before adding more boolean options.

The separate boolean parameters have been shown to be error prone in
the past. See for example commit a57f68dd ("reset: Fix devm bulk
optional exclusive control getter").

Acked-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Link: https://lore.kernel.org/r/20240925-reset-get-deasserted-v2-1-b3601bbd0458@pengutronix.de


Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>