MAINTAINERS: Add entry for SIOX

Maintenance is split between Gavin who works for Eckelmann and so has
the functional authority, knows the background and history of this bus
system and me who designed most of the actual code with the old
microcontroller code as reference.

Acked-by: Gavin Schenk <[email protected]>
Signed-off-by: Uwe Kleine-König <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: Uwe Kleine-König

MAINTAINERS

@@ -12462,6 +12462,13 @@ F:	lib/siphash.c
 F:	lib/test_siphash.c
 F:	include/linux/siphash.h
 
+SIOX
+M:	Gavin Schenk <[email protected]>
+M:	Uwe Kleine-König <[email protected]>
+S:	Supported
+F:	drivers/siox/*
+F:	include/trace/events/siox.h
+
 SIS 190 ETHERNET DRIVER
 M:	Francois Romieu <[email protected]>
 L:	[email protected]