gnu: libblockdev: Patch more commands.

* gnu/packages/disk.scm (libblockdev):
[arguments]<#:phases>{patch-paths}: Patch mkswap and swaplabel commands.

Change-Id: I8da2feccc4dd02d198ccee05f8ea8551c3165e28
Signed-off-by: Maxim Cournoyer <maxim@guixotic.coop>
Reviewed-by: Liliana Marie Prikler <liliana.prikler@gmail.com>
Reviewed-by: Noé Lopez <noelopez@free.fr>

gnu/packages/disk.scm

@@ -1412,7 +1412,9 @@ to create devices with respective mappings for the ATARAID sets discovered.")
                                 "vfat-resize" "fatlabel"))
                 (patch-helpers "src/plugins/fs/xfs.c"
                                ("mkfs.xfs" "xfs_db" "xfs_repair" "xfs_admin"
-                                "xfs_growfs"))))))))
+                                "xfs_growfs"))
+                (patch-helpers "src/plugins/swap.c"
+                               ("mkswap" "swaplabel"))))))))
     (native-inputs
      (list gobject-introspection
            pkg-config