MAINTAINERS: Add ROHM BD72720 PMIC

Add the ROHM BD72720 PMIC driver files to be maintained by undersigned.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Link: https://patch.msgid.link/5ab04df42d8fddab4c2b0b86414314c6bb815ffd.1765804226.git.mazziesaccount@gmail.com
Signed-off-by: Lee Jones <lee@kernel.org>

Author: M-Vaittinen

MAINTAINERS

@@ -22745,6 +22745,7 @@ S:	Supported
 F:	drivers/clk/clk-bd718x7.c
 F:	drivers/gpio/gpio-bd71815.c
 F:	drivers/gpio/gpio-bd71828.c
+F:	drivers/gpio/gpio-bd72720.c
 F:	drivers/mfd/rohm-bd71828.c
 F:	drivers/mfd/rohm-bd718x7.c
 F:	drivers/mfd/rohm-bd9576.c
@@ -22761,6 +22762,7 @@ F:	drivers/watchdog/bd96801_wdt.c
 F:	include/linux/mfd/rohm-bd71815.h
 F:	include/linux/mfd/rohm-bd71828.h
 F:	include/linux/mfd/rohm-bd718x7.h
+F:	include/linux/mfd/rohm-bd72720.h
 F:	include/linux/mfd/rohm-bd957x.h
 F:	include/linux/mfd/rohm-bd96801.h
 F:	include/linux/mfd/rohm-bd96802.h