The power supply core now allows this constification.
Prevent accidental or malicious modification of the data.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20241005-power-supply-battery-const-v1-6-c1f721927048@weissschuh.net


Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>