MAINTAINERS: bd70528: Drop ROHM BD70528 drivers

The only known BD70528 use-cases are such that the PMIC is controlled
from separate MCU which is not running Linux. I am not aware of
any Linux driver users. Furthermore, it seems there is no demand for
this IC.

Ease the maintenance burden and drop the driver.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/90b0565c0eb9429b0962f08d45292a5a9ebe5cea.1637066805.git.matti.vaittinen@fi.rohmeurope.com

MAINTAINERS

@@ -16445,27 +16445,19 @@ ROHM POWER MANAGEMENT IC DEVICE DRIVERS
 R:	Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
 L:	linux-power@fi.rohmeurope.com
 S:	Supported
-F:	Documentation/devicetree/bindings/mfd/rohm,bd70528-pmic.txt
-F:	Documentation/devicetree/bindings/regulator/rohm,bd70528-regulator.txt
 F:	drivers/clk/clk-bd718x7.c
-F:	drivers/gpio/gpio-bd70528.c
 F:	drivers/gpio/gpio-bd71815.c
 F:	drivers/gpio/gpio-bd71828.c
-F:	drivers/mfd/rohm-bd70528.c
 F:	drivers/mfd/rohm-bd71828.c
 F:	drivers/mfd/rohm-bd718x7.c
 F:	drivers/mfd/rohm-bd9576.c
-F:	drivers/power/supply/bd70528-charger.c
-F:	drivers/regulator/bd70528-regulator.c
 F:	drivers/regulator/bd71815-regulator.c
 F:	drivers/regulator/bd71828-regulator.c
 F:	drivers/regulator/bd718x7-regulator.c
 F:	drivers/regulator/bd9576-regulator.c
 F:	drivers/regulator/rohm-regulator.c
 F:	drivers/rtc/rtc-bd70528.c
-F:	drivers/watchdog/bd70528_wdt.c
 F:	drivers/watchdog/bd9576_wdt.c
-F:	include/linux/mfd/rohm-bd70528.h
 F:	include/linux/mfd/rohm-bd71815.h
 F:	include/linux/mfd/rohm-bd71828.h
 F:	include/linux/mfd/rohm-bd718x7.h