Following updates previously done for other drivers, rename all
occurrences of S32 to NXP S32 to avoid ambiguity.
Signed-off-by: Manuel Arguelles <manuel.arguelles@nxp.com>
Introduce Pinctrl driver for SIUL2 module present on NXP S32 devices,
which provides control over all pins, such as function selection and
electrical characteristics that appear on external chip pins.
Signed-off-by: Manuel Arguelles <manuel.arguelles@nxp.com>