target/riscv/cpu.c: make misa_ext_cfgs[] 'const'

The array isn't marked as 'const' because we're initializing their
elements in riscv_cpu_add_misa_properties(), 'name' and 'description'
fields.

In a closer look we can see that we're not using these 2 fields after
creating the MISA properties. And we can create the properties by using
riscv_get_misa_ext_name() and riscv_get_misa_ext_description()
directly.

Remove the 'name' and 'description' fields from RISCVCPUMisaExtConfig
and make misa_ext_cfgs[] a const array.

Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20230925175709.35696-17-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

target/riscv/cpu.c

@@ -1208,8 +1208,6 @@ static void riscv_cpu_init(Object *obj)
 }
 
 typedef struct RISCVCPUMisaExtConfig {
-    const char *name;
-    const char *description;
     target_ulong misa_bit;
     bool enabled;
 } RISCVCPUMisaExtConfig;
@@ -1313,7 +1311,7 @@ const char *riscv_get_misa_ext_description(uint32_t bit)
 #define MISA_CFG(_bit, _enabled) \
     {.misa_bit = _bit, .enabled = _enabled}
 
-static RISCVCPUMisaExtConfig misa_ext_cfgs[] = {
+static const RISCVCPUMisaExtConfig misa_ext_cfgs[] = {
     MISA_CFG(RVA, true),
     MISA_CFG(RVC, true),
     MISA_CFG(RVD, true),
@@ -1340,25 +1338,22 @@ void riscv_cpu_add_misa_properties(Object *cpu_obj)
     int i;
 
     for (i = 0; i < ARRAY_SIZE(misa_ext_cfgs); i++) {
-        RISCVCPUMisaExtConfig *misa_cfg = &misa_ext_cfgs[i];
+        const RISCVCPUMisaExtConfig *misa_cfg = &misa_ext_cfgs[i];
         int bit = misa_cfg->misa_bit;
-
-        misa_cfg->name = riscv_get_misa_ext_name(bit);
-        misa_cfg->description = riscv_get_misa_ext_description(bit);
+        const char *name = riscv_get_misa_ext_name(bit);
+        const char *desc = riscv_get_misa_ext_description(bit);
 
         /* Check if KVM already created the property */
-        if (object_property_find(cpu_obj, misa_cfg->name)) {
+        if (object_property_find(cpu_obj, name)) {
             continue;
         }
 
-        object_property_add(cpu_obj, misa_cfg->name, "bool",
+        object_property_add(cpu_obj, name, "bool",
                             cpu_get_misa_ext_cfg,
                             cpu_set_misa_ext_cfg,
                             NULL, (void *)misa_cfg);
-        object_property_set_description(cpu_obj, misa_cfg->name,
-                                        misa_cfg->description);
-        object_property_set_bool(cpu_obj, misa_cfg->name,
-                                 misa_cfg->enabled, NULL);
+        object_property_set_description(cpu_obj, name, desc);
+        object_property_set_bool(cpu_obj, name, misa_cfg->enabled, NULL);
     }
 }