regulator: core: Add missing newline character

dev_err_probe() error messages need newline character.

Fixes: 6eabfc01 ("regulator: core: Allow specifying an initial load w/ the bulk API")
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Link: https://patch.msgid.link/20250122072019.1926093-1-alexander.stein@ew.tq-group.com


Signed-off-by: Mark Brown <broonie@kernel.org>