This GPIO controller is a part of Intel MID platforms which are somehow
different to pure PCs. Thus, there is no need that driver is compiled for them.
Replace dependency to X86_INTEL_MID.
While here, fix capitalization of MID abbreviation.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>