MAINTAINERS: wifi: cw1200: add net-cw1200.h

This is part of an effort [1] to assign a section in MAINTAINERS to header
files that relate to Networking. In this case the files with "net" in
their name.

[1] https://lore.kernel.org/netdev/[email protected]/

It seems that net-cw1200.h is part of the CW1200 WLAN driver and
this it is appropriate to add it to the section for that driver.

Signed-off-by: Simon Horman <[email protected]>
Signed-off-by: Kalle Valo <[email protected]>
Link: https://patch.msgid.link/[email protected]

Author: horms

MAINTAINERS

@@ -5951,6 +5951,7 @@ F:	Documentation/process/cve.rst
 CW1200 WLAN driver
 S:	Orphan
 F:	drivers/net/wireless/st/cw1200/
+F:	include/linux/platform_data/net-cw1200.h
 
 CX18 VIDEO4LINUX DRIVER
 M:	Andy Walls <[email protected]>