build: fix vpp compilation failure on ThunderX2 and Amp
build: fix vpp compilation failure on ThunderX2 and Amp

fix compile issue that caused by enabling "-mtune=thunderx2t99"
flag during compilation, such as
"/opt/vpp-agent/dev/vpp/src/vnet/interface_stats.c:164:1:
internal compiler error: Segmentation fault"

Type: fix

Change-Id: Iaf9f80a6c203a7e5b6a40523f14a62bb37091c92
Signed-off-by: Jianlin Lv <752eae91a476c3d35f9a7fd15fcd40979a048de4@arm.com>

vpp-dev/vpp,chrisy/vpp,FDio/vpp,vpp-dev/vpp,vpp-dev/vpp,FDio/vpp,vpp-dev/vpp,FDio/vpp,chrisy/vpp,vpp-dev/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,vpp-dev/vpp,FDio/vpp,chrisy/vpp,vpp-dev/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,chrisy/vpp