vppinfra - ARM: cycle count 64bits register is only available on ARMv8
vppinfra - ARM: cycle count 64bits register is only available on ARMv8

Change-Id: I7d622e591020a482af68667f4d1ed2056258d2c8
Signed-off-by: Christophe Fontaine <45e030f39bbb5d342ea1aaf7ae211d57367c2315@qosmos.com>

GabrielGanne/vpp-flowtable,milanlenco/vpp,FDio/vpp,muharif/vpp,chrisy/vpp,muharif/vpp,muharif/vpp,milanlenco/vpp,GabrielGanne/vpp-flowtable,milanlenco/vpp,milanlenco/vpp,vpp-dev/vpp,chrisy/vpp,vpp-dev/vpp,FDio/vpp,FDio/vpp,FDio/vpp,vpp-dev/vpp,FDio/vpp,vpp-dev/vpp,chrisy/vpp,GabrielGanne/vpp-flowtable,muharif/vpp,chrisy/vpp,milanlenco/vpp,chrisy/vpp,chrisy/vpp,GabrielGanne/vpp-flowtable,muharif/vpp,chrisy/vpp,GabrielGanne/vpp-flowtable,vpp-dev/vpp,chrisy/vpp,vpp-dev/vpp,FDio/vpp,milanlenco/vpp,GabrielGanne/vpp-flowtable,vpp-dev/vpp,FDio/vpp,FDio/vpp,muharif/vpp