MAINTAINERS: Replace Siemens IPC related bouncing maintainers

Since complaints about bouncing maintainers raised [1] we have now a
replacement for maintainers that stepped away from their duties.

[1] https://www.spinics.net/lists/platform-driver-x86/msg47105.html

Signed-off-by: Benedikt Niedermayr <benedikt.niedermayr@siemens.com>
Link: https://lore.kernel.org/r/20241028112359.3333152-2-benedikt.niedermayr@siemens.com
Signed-off-by: Lee Jones <lee@kernel.org>

Author: bniedermayr

MAINTAINERS

@@ -21108,16 +21108,16 @@ F:	drivers/media/usb/siano/
 F:	drivers/media/usb/siano/
 
 SIEMENS IPC LED DRIVERS
-M:	Gerd Haeussler <gerd.haeussler.ext@siemens.com>
-M:	Xing Tong Wu <xingtong.wu@siemens.com>
+M:	Bao Cheng Su <baocheng.su@siemens.com>
+M:	Benedikt Niedermayr <benedikt.niedermayr@siemens.com>
 M:	Tobias Schaffner <tobias.schaffner@siemens.com>
 L:	linux-leds@vger.kernel.org
 S:	Maintained
 F:	drivers/leds/simple/
 
 SIEMENS IPC PLATFORM DRIVERS
-M:	Gerd Haeussler <gerd.haeussler.ext@siemens.com>
-M:	Xing Tong Wu <xingtong.wu@siemens.com>
+M:	Bao Cheng Su <baocheng.su@siemens.com>
+M:	Benedikt Niedermayr <benedikt.niedermayr@siemens.com>
 M:	Tobias Schaffner <tobias.schaffner@siemens.com>
 L:	platform-driver-x86@vger.kernel.org
 S:	Maintained
@@ -21126,8 +21126,8 @@ F:	include/linux/platform_data/x86/simatic-ipc-base.h
 F:	include/linux/platform_data/x86/simatic-ipc.h
 
 SIEMENS IPC WATCHDOG DRIVERS
-M:	Gerd Haeussler <gerd.haeussler.ext@siemens.com>
-M:	Xing Tong Wu <xingtong.wu@siemens.com>
+M:	Bao Cheng Su <baocheng.su@siemens.com>
+M:	Benedikt Niedermayr <benedikt.niedermayr@siemens.com>
 M:	Tobias Schaffner <tobias.schaffner@siemens.com>
 L:	linux-watchdog@vger.kernel.org
 S:	Maintained