Property 'enable-active-low' does not exist. Only 'enable-active-high' is
valid, and when this property is absent the gpio regulator will act as
active low by default.
So remove the unexisting 'enable-active-low' property.
Currently the GPIO flag is GPIO_ACTIVE_HIGH. In order to make
the dts description accurate, pass the GPIO_ACTIVE_LOW flag instead.
This change is safe because the gpio regulator driver does not take the
GPIO flag polarity into account.