regulator: fp9931: fix regulator node pointer

Sync the driver with the binding. During review process a regulators
subnode was requested but neither driver nor test setup was updated.

Fixes: 12d821bd13d4 ("regulator: Add FP9931/JD9930 driver")
Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Link: https://patch.msgid.link/20251223-fp9931-fix-v1-1-b19b4c1e7056@kemnade.info
Signed-off-by: Mark Brown <broonie@kernel.org>
1 file changed