power: supply: core: fix supplied_from allocations

power: supply: core: fix supplied_from allocations

If dts property power-supplies has multiple values, then accessing to
psy->supplied_from[i-1] in __power_supply_populate_supplied_from will
overrun supplied_from array.

Fixes: f6e0b081fb30 ("power_supply: Populate supplied_from hierarchy from the device tree")
Signed-off-by: Lucas Tsai <lucas_tsai@richtek.com>
Link: https://patch.msgid.link/20260609114403.3896073-1-lucas_tsai@richtek.com
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>