power: supply: sysfs: print single value in uevent for POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR

power: supply: sysfs: print single value in uevent for POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR

Currently an uevent contains the same string representation of a
property as sysfs. However for POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR this
is specially formatted to indicate all possible values.
This doesn't make sense for uevents and complicates parsing.
Instead only include the currently active value in uevents.

As currently no in-tree driver uses POWER_SUPPLY_PROP_CHARGE_BEHAVIOUR
this change is not a problem.
Soon the property will actually be used so fix the formatting before
that happens.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20241111-power-supply-extensions-v4-1-7240144daa8e@weissschuh.net
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>