smbus manuals: include term SMBus in description

Fixes: 5ad3b09f2fe9 (smb: distinguishable descriptions)
MFC after: 3 days
Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/

(cherry picked from commit 8ccdf86ee57575b04983bc7be68c357fb83668f8)

share/man/man4/iicsmb.4

@@ -1,5 +1,7 @@
-.\" Copyright (c) 1998, Nicolas Souchu
-.\" All rights reserved.
+.\"-
+.\" SPDX-License-Identifier: BSD-2-Clause
+.\"
+.\" Copyright (c) 1998, Nicolas Souchu. All rights reserved.
 .\"
 .\" Redistribution and use in source and binary forms, with or without
 .\" modification, are permitted provided that the following conditions
@@ -27,7 +29,7 @@
 .Os
 .Sh NAME
 .Nm iicsmb
-.Nd I2C to SMB bridge
+.Nd I2C to SMBus bridge
 .Sh SYNOPSIS
 .Cd "device iicsmb"
 .Pp

share/man/man4/smb.4

@@ -29,7 +29,7 @@
 .Os
 .Sh NAME
 .Nm smb
-.Nd SMB generic I/O device driver
+.Nd System Management Bus (SMBus) generic I/O device driver
 .Sh SYNOPSIS
 .Cd "device smb"
 .Sh DESCRIPTION