dts: bindings/regulator: Add new properties for nxp vref

1. Added new boolean type 'nxp,internal-voltage-regulator-en'
and 'nxp,chop-oscillator-en' properties for 'nxp,vref'.
The user can use these properties to improve the stability
and accuracy of the VREF output voltage.

2. Added properties 'nxp,current-compensation-en' and
'nxp,internal-voltage-regulator-en' and 'nxp,chop-oscillator-en'
for LPC55S3x, MCXN23x, MCXN94x, and MCXW7x VREF node.

Signed-off-by: Zhaoxiang Jin <Zhaoxiang.Jin_1@nxp.com>