target/loongarch: CPUCFG support LASX

Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230914022645.1151356-58-gaosong@loongson.cn>

target/loongarch/cpu.c

@@ -393,6 +393,7 @@ static void loongarch_la464_initfn(Object *obj)
     data = FIELD_DP32(data, CPUCFG2, FP_DP, 1);
     data = FIELD_DP32(data, CPUCFG2, FP_VER, 1);
     data = FIELD_DP32(data, CPUCFG2, LSX, 1),
+    data = FIELD_DP32(data, CPUCFG2, LASX, 1),
     data = FIELD_DP32(data, CPUCFG2, LLFTP, 1);
     data = FIELD_DP32(data, CPUCFG2, LLFTP_VER, 1);
     data = FIELD_DP32(data, CPUCFG2, LSPW, 1);