sparc: fix qtest

Initialize TCG only when enabled.
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

target-sparc/cpu.c

@@ -119,7 +119,9 @@ CPUSPARCState *cpu_sparc_init(const char *cpu_model)
     cpu = SPARC_CPU(object_new(TYPE_SPARC_CPU));
     env = &cpu->env;
 
-    gen_intermediate_code_init(env);
+    if (tcg_enabled()) {
+        gen_intermediate_code_init(env);
+    }
 
     if (cpu_sparc_register(env, cpu_model) < 0) {
         object_delete(OBJECT(cpu));