MAINTAINERS: Add me as maintainer of Nokia N900 power supply drivers

I'm author of two of those drivers (bq2415x and rx51) and I added
more patches for other twos. Also I fished (proper) open source
power management software for Nokia N900 and those kernel drivers
are part of it.

Signed-off-by: Pali Rohár <[e-mail]>
Signed-off-by: Sebastian Reichel <[e-mail]>

MAINTAINERS

···
 S:	Maintained
 F:	arch/nios2/
 
+NOKIA N900 POWER SUPPLY DRIVERS
+M:	Pali Rohár <[e-mail]>
+S:	Maintained
+F:	include/linux/power/bq2415x_charger.h
+F:	include/linux/power/bq27x00_battery.h
+F:	include/linux/power/isp1704_charger.h
+F:	drivers/power/bq2415x_charger.c
+F:	drivers/power/bq27x00_battery.c
+F:	drivers/power/isp1704_charger.c
+F:	drivers/power/rx51_battery.c
+
 NTB DRIVER
 M:	Jon Mason <[e-mail]>
 M:	Dave Jiang <[e-mail]>