MAINTAINERS: Move Milo Kim to credits

Milo Kim's email in TI bounces with permanent error (550: Invalid
recipient). Last email from him on LKML was in 2017. Move Milo Kim to
credits and remove the separate driver entries for:
- TI LP855x backlight driver,
- TI LP8727 charger driver,
- TI LP8788 MFD (ADC, LEDs, charger and regulator) drivers.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Acked-by: Sebastian Reichel <[e-mail]>
Signed-off-by: Lee Jones <[e-mail]>

CREDITS

···
 E: [e-mail]
 D: Samsung S3C, S5P and Exynos ARM architectures
 
+N: Milo Kim
+D: TI LP855x, LP8727 and LP8788 drivers
+
 N: Sangbeom Kim
 E: [e-mail]
 D: Samsung SoC Audio (ASoC) drivers

MAINTAINERS

···
 F:	sound/soc/codecs/isabelle*
 F:	sound/soc/codecs/lm49453*
 
-TI LP855x BACKLIGHT DRIVER
-M:	Milo Kim <[e-mail]>
-S:	Maintained
-F:	Documentation/driver-api/backlight/lp855x-driver.rst
-F:	drivers/video/backlight/lp855x_bl.c
-F:	include/linux/platform_data/lp855x.h
-
-TI LP8727 CHARGER DRIVER
-M:	Milo Kim <[e-mail]>
-S:	Maintained
-F:	drivers/power/supply/lp8727_charger.c
-F:	include/linux/platform_data/lp8727.h
-
-TI LP8788 MFD DRIVER
-M:	Milo Kim <[e-mail]>
-S:	Maintained
-F:	drivers/iio/adc/lp8788_adc.c
-F:	drivers/leds/leds-lp8788.c
-F:	drivers/mfd/lp8788*.c
-F:	drivers/power/supply/lp8788-charger.c
-F:	drivers/regulator/lp8788-*.c
-F:	include/linux/mfd/lp8788*.h
-
 TI NETCP ETHERNET DRIVER
 M:	Wingman Kwok <[e-mail]>
 M:	Murali Karicheri <[e-mail]>