pmdomain: raspberrypi-power: set flag GENPD_FLAG_ACTIVE_WAKEUP

Set flag GENPD_FLAG_ACTIVE_WAKEUP to rpi_power genpd, then when a device
is set as wakeup source using device_set_wakeup_enable, the power
domain could be kept on to make sure the device could wakeup the system.

Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
Link: https://lore.kernel.org/r/20240728114200.75559-6-wahrenst@gmx.net


Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>