The devm_regulator_get_enable_read_voltage() function is supposed to
return the voltage that the regulator is currently set to. However, it
currently returns 0.

Fixes: b250c20b ("regulator: devres: add API for reference voltage supplies")
Signed-off-by: David Lechner <dlechner@baylibre.com>
Link: https://lore.kernel.org/r/20240506-regulator-devm_regulator_get_enable_read_voltage-fixes-v1-1-356cdd152067@baylibre.comSigned-off-by: Mark Brown <broonie@kernel.org>