Convert the vctrl-regulator bindings to DT schema. This resolves a dtbs check warning for the rk3399-gru devices. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Link: https://patch.msgid.link/20240930210424.1994047-1-heiko@sntech.de Signed-off-by: Mark Brown <broonie@kernel.org>