MAINTAINERS: Add myself as designated reviewer of Intel PMIC GPIO

There are few Intel PMIC GPIO device drivers which I would like
to review.

Note, Intel MSIC is old system controller that based mostly on PMIC
integrated in it. Thus, I included it as well.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

MAINTAINERS

@@ -7354,6 +7354,12 @@ T:	git https://github.com/intel/gvt-linux.git
 S:	Supported
 F:	drivers/gpu/drm/i915/gvt/
 
+INTEL PMIC GPIO DRIVER
+R:	Andy Shevchenko <andriy.shevchenko@linux.intel.com>
+S:	Maintained
+F:	drivers/gpio/gpio-*cove.c
+F:	drivers/gpio/gpio-msic.c
+
 INTEL HID EVENT DRIVER
 M:	Alex Hung <alex.hung@canonical.com>
 L:	platform-driver-x86@vger.kernel.org