MAINTAINERS: Update the entry for MPQ7932 PMIC driver

Update the MAINTAINERS file to include the path for the MPQ7932

Signed-off-by: Saravanan Sekar <saravanan@linumiz.com>
Link: https://lore.kernel.org/r/20221207173716.123223-5-saravanan@linumiz.com


Signed-off-by: Guenter Roeck <linux@roeck-us.net>