MAINTAINERS: Add maintainer for Baikal-T1 PVT hwmon driver

Add myself as a maintainer of the Baikal-T1 PVT sensors driver.
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Link: https://lore.kernel.org/r/20231122170506.27267-2-Sergey.Semin@baikalelectronics.ruSigned-off-by: Guenter Roeck <linux@roeck-us.net>

MAINTAINERS

@@ -3456,6 +3456,14 @@ F:	drivers/video/backlight/
 F:	include/linux/backlight.h
 F:	include/linux/pwm_backlight.h
 
+BAIKAL-T1 PVT HARDWARE MONITOR DRIVER
+M:	Serge Semin <fancer.lancer@gmail.com>
+L:	linux-hwmon@vger.kernel.org
+S:	Supported
+F:	Documentation/devicetree/bindings/hwmon/baikal,bt1-pvt.yaml
+F:	Documentation/hwmon/bt1-pvt.rst
+F:	drivers/hwmon/bt1-pvt.[ch]
+
 BARCO P50 GPIO DRIVER
 M:	Santosh Kumar Yadav <santoshkumar.yadav@barco.com>
 M:	Peter Korsgaard <peter.korsgaard@barco.com>