gpio: mcux: Convert convert to DT_INST defines

Convert driver to use DT_INST_ defines.  As part of this conversion we
remove the Kconfig options for per GPIO controller enables and instead
get that information from device tree.  This means we now disable each
GPIO controller by default in the DTS and have each board dts enable the
GPIO controller ports it needs.

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
35 files changed