MAINTAINERS: Use my kernel.org address for ACPI PMIC work

Switch to use my kernel.org address for ACPI PMIC work.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Link: https://patch.msgid.link/20250204112219.3969629-1-mika.westerberg@linux.intel.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Author: westeri

MAINTAINERS

@@ -355,7 +355,7 @@ ACPI PMIC DRIVERS
 M:	"Rafael J. Wysocki" <rafael@kernel.org>
 M:	Len Brown <lenb@kernel.org>
 R:	Andy Shevchenko <andy@kernel.org>
-R:	Mika Westerberg <mika.westerberg@linux.intel.com>
+R:	Mika Westerberg <westeri@kernel.org>
 L:	linux-acpi@vger.kernel.org
 S:	Supported
 Q:	https://patchwork.kernel.org/project/linux-acpi/list/