Updated version of klauspost/reedsolomon with NEON support for ARM (#4865)

vendor/github.com/klauspost/reedsolomon/galois_noasm.go

@@ -1,4 +1,5 @@
 //+build !amd64 noasm appengine
+//+build !arm64 noasm appengine
 
 // Copyright 2015, Klaus Post, see LICENSE for details.
 
@@ -17,3 +18,10 @@ func galMulSliceXor(c byte, in, out []byte, ssse3, avx2 bool) {
 		out[n] ^= mt[input]
 	}
 }
+
+// slice galois add
+func sliceXor(in, out []byte, sse2 bool) {
+	for n, input := range in {
+		out[n] ^= input
+	}
+}