This patch fixes compilation errors on Centos 7.5 when
CONFIG_RTE_KNI_KMOD_ETHTOOL is set to 'y'.
On RHEL75 ndo_change_mtu has changed to ndo_change_mtu_rh74.
See commit 37d477b6863e5c06 ("kni: fix build on RHEL 7.5")
Signed-off-by: Drocula Lambda <quzeyao@gmail.com>
Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>
3639c91df4