fixup! feat:add cortex-m kvm vcpu init For cortex-m, cpu has to reset…

… before vcpu init. Add vcpu_ioctl interfacs for cortex regs and sregs rw.

target/arm/kvm32.c

@@ -315,8 +315,7 @@ int kvm_arch_put_registers(CPUState *cs, int level)
 
     if (arm_feature(&cpu->env, ARM_FEATURE_M)) {
         return kvm_cortex_m_vcpu_init(cs);
-    }
-    else {
+    } else {
         /* Make sure the banked regs are properly set */
         mode = env->uncached_cpsr & CPSR_M;
         bn = bank_number(mode);