MAINTAINERS: add maintainer for ACPI parts of I2C

Mika has done great work in that field, so let people know.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>

MAINTAINERS

@@ -4446,6 +4446,13 @@ F:	include/linux/i2c-*.h
 F:	include/uapi/linux/i2c.h
 F:	include/uapi/linux/i2c-*.h
 
+I2C ACPI SUPPORT
+M:	Mika Westerberg <mika.westerberg@linux.intel.com>
+L:	linux-i2c@vger.kernel.org
+L:	linux-acpi@vger.kernel.org
+S:	Maintained
+F:	drivers/i2c/i2c-acpi.c
+
 I2C-TAOS-EVM DRIVER
 M:	Jean Delvare <jdelvare@suse.de>
 L:	linux-i2c@vger.kernel.org