MAINTAINERS: New maintainer for Samsung's Trats development board.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

MAINTAINERS

@@ -727,7 +727,7 @@ Chander Kashyap <k.chander@samsung.com>
 	SMDKV310		ARM ARMV7 (EXYNOS4210 SoC)
 	SMDK5250		ARM ARMV7 (EXYNOS5250 SoC)
 
-Heungjun Kim <riverful.kim@samsung.com>
+Lukasz Majewski <l.majewski@samsung.com>
 
 	trats			ARM ARMV7 (EXYNOS4210 SoC)