MAINTAINERS: move Kamil Debski to credits

Kamil Debski has not been active on LKML since 2017:
https://lore.kernel.org/lkml/?q=f%3A%22Kamil+Debski%22

Move Kamil Debski to the CREDITS file.  Thank you for the effort you put
in to the upstream Linux kernel work.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Cc: Kamil Debski <kamil@wypas.org>
Cc: Andrzej Hajda <a.hajda@samsung.com>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Link: https://lore.kernel.org/r/20201016151528.7553-1-krzk@kernel.org

CREDITS

@@ -849,6 +849,12 @@ D: trivial hack to add variable address length routing to Rose.
 D: AX25-HOWTO, HAM-HOWTO, IPX-HOWTO, NET-2-HOWTO
 D: ax25-utils maintainer.
 
+N: Kamil Debski
+E: kamil@wypas.org
+D: Samsung S5P 2D graphics acceleration and Multi Format Codec drivers
+D: Samsung USB2 phy drivers
+D: PWM fan driver
+
 N: Helge Deller
 E: deller@gmx.de
 W: http://www.parisc-linux.org/

MAINTAINERS

@@ -2412,7 +2412,6 @@ F:	arch/arm/mach-s5pv210/
 
 ARM/SAMSUNG S5P SERIES 2D GRAPHICS ACCELERATION (G2D) SUPPORT
 M:	Kyungmin Park <kyungmin.park@samsung.com>
-M:	Kamil Debski <kamil@wypas.org>
 M:	Andrzej Hajda <a.hajda@samsung.com>
 L:	linux-arm-kernel@lists.infradead.org
 L:	linux-media@vger.kernel.org
@@ -2438,7 +2437,6 @@ F:	drivers/media/platform/s5p-jpeg/
 
 ARM/SAMSUNG S5P SERIES Multi Format Codec (MFC) SUPPORT
 M:	Kyungmin Park <kyungmin.park@samsung.com>
-M:	Kamil Debski <kamil@wypas.org>
 M:	Jeongtae Park <jtp.park@samsung.com>
 M:	Andrzej Hajda <a.hajda@samsung.com>
 L:	linux-arm-kernel@lists.infradead.org
@@ -14230,7 +14228,6 @@ F:	drivers/media/usb/pwc/*
 F:	include/trace/events/pwc.h
 
 PWM FAN DRIVER
-M:	Kamil Debski <kamil@wypas.org>
 M:	Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
 L:	linux-hwmon@vger.kernel.org
 S:	Supported
@@ -15515,7 +15512,6 @@ T:	git https://github.com/lmajewski/linux-samsung-thermal.git
 F:	drivers/thermal/samsung/
 
 SAMSUNG USB2 PHY DRIVER
-M:	Kamil Debski <kamil@wypas.org>
 M:	Sylwester Nawrocki <s.nawrocki@samsung.com>
 L:	linux-kernel@vger.kernel.org
 S:	Supported