Feature detection doesn't recognize ipset v7 use on kernel v5.x systems
and thus disables the tc ematch function em_ipset.

- backport patch:
  * 002-configure-support-ipset-v7.patch:
    650591a7a70c configure: support ipset version 7 with kernel version 5

Fixes: 4e0c54bc ("kernel: add support for kernel 5.4")

Signed-off-by: Tony Ambardar <itugrok@yahoo.com>