scsi: MAINTAINERS: Add header files to SCSI SUBSYSTEM

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

[1] https://lore.kernel.org/netdev/[e-mail]/

As part of that effort these files came up:

* include/uapi/scsi/scsi_netlink_fc.h
* include/uapi/scsi/scsi_netlink.h

Unlike all the other matching files, these one seem to relate more closely
to SCSI than Networking, so I have added them to the SCSI SUBSYSTEM
section.

In order to simplify things, and for consistency, I have added the entire
include/uapi/scsi rather than the individual files.

Signed-off-by: Simon Horman <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Reviewed-by: Bart Van Assche <[e-mail]>
Signed-off-by: Martin K. Petersen <[e-mail]>

MAINTAINERS

···
 F:	drivers/scsi/
 F:	drivers/ufs/
 F:	include/scsi/
+F:	include/uapi/scsi/
 
 SCSI TAPE DRIVER
 M:	Kai Mäkisara <[e-mail]>