MAINTAINERS: Merge TTY layer and serial drivers

Greg suggested we merge TTY layer and serial driver entries to
avoid duplicates.
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Acked-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20230804102042.53576-1-tony@atomide.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

MAINTAINERS

@@ -19227,13 +19227,6 @@ F:	Documentation/devicetree/bindings/serial/serial.yaml
 F:	drivers/tty/serdev/
 F:	include/linux/serdev.h
 
-SERIAL DRIVERS
-M:	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-L:	linux-serial@vger.kernel.org
-S:	Maintained
-F:	Documentation/devicetree/bindings/serial/
-F:	drivers/tty/serial/
-
 SERIAL IR RECEIVER
 M:	Sean Young <sean@mess.org>
 L:	linux-media@vger.kernel.org
@@ -21639,20 +21632,16 @@ W:	https://github.com/srcres258/linux-doc
 T:	git git://github.com/srcres258/linux-doc.git doc-zh-tw
 F:	Documentation/translations/zh_TW/
 
-TTY LAYER
+TTY LAYER AND SERIAL DRIVERS
 M:	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 M:	Jiri Slaby <jirislaby@kernel.org>
 L:	linux-kernel@vger.kernel.org
 L:	linux-serial@vger.kernel.org
 S:	Supported
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git
+F:	Documentation/devicetree/bindings/serial/
 F:	Documentation/driver-api/serial/
 F:	drivers/tty/
-F:	drivers/tty/serial/serial_base.h
-F:	drivers/tty/serial/serial_base_bus.c
-F:	drivers/tty/serial/serial_core.c
-F:	drivers/tty/serial/serial_ctrl.c
-F:	drivers/tty/serial/serial_port.c
 F:	include/linux/selection.h
 F:	include/linux/serial.h
 F:	include/linux/serial_core.h