ixgbevf: fix size of queue stats length

ixgbevf: fix size of queue stats length

IXGBEVF_QUEUE_STATS_LEN is based on ixgebvf_stats, not ixgbe_stats.

This change fixes a bug where ethtool -S displayed some empty fields.

Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Orabug: 26242766
(cherry picked from commit f87fc44770f54ff1b54d44ae9cec11f10efeca02)
Signed-off-by: Jack Vogel <jack.vogel@oracle.com>
Reviewed-by: Ethan Zhao <ethan.zhao@oracle.com>