regulator: tps65219: Update driver name

Follow the same naming convention in tps6594-regulator.c with
tpsxxx-regulator instead of tpsxxx-pmic.

Signed-off-by: Shree Ramamoorthy <s-ramamoorthy@ti.com>
Link: https://patch.msgid.link/20241217204526.1010989-3-s-ramamoorthy@ti.com


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