feat(arch): the rest of the SVE2 BFloat16 wall

Assisted-by: GLM 5.3 Flash

asm/extension_test.go

@@ -327,6 +327,17 @@ func TestExtensionNamesARM64(t *testing.T) {
 		"ZBFMINNM",
 		"ZBFMUL",
 		"ZBFSUB",
+		"ZBFCVT",
+		"ZBFCVTNT",
+		"ZBFDOT",
+		"ZBFMLA",
+		"ZBFMLALB",
+		"ZBFMLALT",
+		"ZBFMLS",
+		"ZBFMLSLB",
+		"ZBFMLSLT",
+		"ZBFMMLA",
+		"ZBFSCALE",
 		"ZLD2B",
 		"ZLD2D",
 		"ZLD2H",
@@ -469,7 +480,7 @@ func TestExtensionNamesARM64(t *testing.T) {
 	if strings.Join(got, ",") != strings.Join(want, ",") {
 		t.Errorf("ExtensionNames(ARM64) = %v, want %v", got, want)
 	}
-	if n := len(arch.Extensions(arch.ARM64)); n != 470 {
-		t.Errorf("the family registers %d instructions, want 470", n)
+	if n := len(arch.Extensions(arch.ARM64)); n != 483 {
+		t.Errorf("the family registers %d instructions, want 483", n)
 	}
 }