MFC r296654: Use geom disk list instead camcontrol identify.

The new way works for almost any disk, while the old only for ATA.

usr.sbin/pc-sysinstall/backend-query/disk-list.sh

@@ -82,8 +82,8 @@ do
     esac
   fi
 
-  # Try and find some identification information with camcontrol
-  NEWLINE=$(camcontrol identify $DEV 2>/dev/null | sed -ne 's/^device model *//p')
+  # Try and get some identification information from GEOM
+  NEWLINE=$(geom disk list $DEV 2>/dev/null | sed -ne 's/^   descr: *//p')
   if [ -z "$NEWLINE" ]; then
     	NEWLINE=" <Unknown Device>"
   fi