target/riscv: move zmmul out of the experimental properties

- Zmmul is ratified and is now version 1.0

Signed-off-by: Weiwei Li <liweiwei@iscas.ac.cn>
Signed-off-by: Junqiang Wang <wangjunqiang@iscas.ac.cn>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20220710101546.3907-1-liweiwei@iscas.ac.cn>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

target/riscv/cpu.c

@@ -1014,12 +1014,13 @@ static Property riscv_cpu_extensions[] = {
     DEFINE_PROP_BOOL("zhinx", RISCVCPU, cfg.ext_zhinx, false),
     DEFINE_PROP_BOOL("zhinxmin", RISCVCPU, cfg.ext_zhinxmin, false),
 
+    DEFINE_PROP_BOOL("zmmul", RISCVCPU, cfg.ext_zmmul, false),
+
     /* Vendor-specific custom extensions */
     DEFINE_PROP_BOOL("xventanacondops", RISCVCPU, cfg.ext_XVentanaCondOps, false),
 
     /* These are experimental so mark with 'x-' */
     DEFINE_PROP_BOOL("x-j", RISCVCPU, cfg.ext_j, false),
-    DEFINE_PROP_BOOL("x-zmmul", RISCVCPU, cfg.ext_zmmul, false),
     /* ePMP 0.9.3 */
     DEFINE_PROP_BOOL("x-epmp", RISCVCPU, cfg.epmp, false),
     DEFINE_PROP_BOOL("x-aia", RISCVCPU, cfg.aia, false),