mfiutil.8/mrsasutil.8: Use Broadcom/LSI consistently

Both tools support controllers from both companies, so document it.

Reviewed by:	ziaee (via IRC)
MFC after:	immediately
Differential Revision:	https://reviews.freebsd.org/D57212

usr.sbin/mfiutil/mfiutil.8

@@ -25,13 +25,13 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd September 2, 2011
+.Dd May 23, 2026
 .Dt MFIUTIL 8
 .Os
 .Sh NAME
 .Nm mfiutil ,
 .Nm mrsasutil
-.Nd Utility for managing LSI MegaRAID SAS controllers
+.Nd manage Broadcom/LSI MegaRAID SAS controllers
 .Sh SYNOPSIS
 .Nm
 .Cm version
@@ -258,7 +258,7 @@
 .Sh DESCRIPTION
 The
 .Nm
-utility can be used to display or modify various parameters on LSI
+utility can be used to display or modify various parameters on Broadcom/LSI
 MegaRAID SAS RAID controllers.
 Each invocation of
 .Nm