MAINTAINERS: Use my infradead account exclusively for PDx86 work

ACPI PMIC subsystem listed me as a designated reviewer with
infradead email which is not what I want.

I'm using infradead email only for PDx86 related work. Thus, update
MAINTAINERS accordingly.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

MAINTAINERS

@@ -377,7 +377,7 @@ F:	drivers/platform/x86/i2c-multi-instantiate.c
 ACPI PMIC DRIVERS
 M:	"Rafael J. Wysocki" <rjw@rjwysocki.net>
 M:	Len Brown <lenb@kernel.org>
-R:	Andy Shevchenko <andy@infradead.org>
+R:	Andy Shevchenko <andriy.shevchenko@linux.intel.com>
 R:	Mika Westerberg <mika.westerberg@linux.intel.com>
 L:	linux-acpi@vger.kernel.org
 Q:	https://patchwork.kernel.org/project/linux-acpi/list/