Fix disassmeble kmada32 to it alais name kmar64

Author: pz9115

gas/testsuite/gas/riscv/insn-dsp64.d

@@ -74,7 +74,7 @@ Disassembly of section .text:
 [ 	]+.*:[ 	]+.*[ 	]+kmatt32[ 	]+a1,a2,a3
 [ 	]+.*:[ 	]+.*[ 	]+kmda32[ 	]+a1,a2,a3
 [ 	]+.*:[ 	]+.*[ 	]+kmxda32[ 	]+a1,a2,a3
-[ 	]+.*:[ 	]+.*[ 	]+kmada32[ 	]+a1,a2,a3
+[ 	]+.*:[ 	]+.*[ 	]+kmar64[ 	]+a1,a2,a3
 [ 	]+.*:[ 	]+.*[ 	]+kmaxda32[ 	]+a1,a2,a3
 [ 	]+.*:[ 	]+.*[ 	]+kmads32[ 	]+a1,a2,a3
 [ 	]+.*:[ 	]+.*[ 	]+kmadrs32[ 	]+a1,a2,a3