added a valid discriminator between Grace & Axion

Author: Richard Top

init/arch_specs/eessi_arch_arm.spec

@@ -7,4 +7,5 @@
 "aarch64/neoverse_n1"	"0x41"		"asimddp"		# AWS Graviton2
 "aarch64/neoverse_v1"	"ARM"		"asimddp svei8mm"
 "aarch64/neoverse_v1"	"0x41"		"asimddp svei8mm"	# AWS Graviton3
-"aarch64/nvidia/grace"	"0x41"		"ssbs svesm4"		# NVIDIA Grace
+"aarch64/google/axion"	"0x41"		"sve2 rng sm3 sm4 svesm4"	# Google Axion
+"aarch64/nvidia/grace"	"0x41"		"sve2 sm3 sm4 svesm4"		# NVIDIA Grace