arch: arc: enable the workaround of sleep only for SMP case in nsim

Because the issue of nsim, the sleep instruction doest not work
correctly when SMP is enabled. A workaround is introduced in commit
d56a12d, this workaround should be enabled only for SMP case in
nsim.

For other cases, no need of this workaround.

This commit fixes #24276

Signed-off-by: Wayne Ren <wei.ren@synopsys.com>

arch/arc/core/cpu_idle.S

@@ -47,14 +47,15 @@ SECTION_FUNC(TEXT, arch_cpu_idle)
  * It's found that (in nsim_hs_smp), when cpu
  * is sleeping, no response to inter-processor interrupt
  * although it's pending and interrupts are enabled.
+ * (Here fire SNPS JIRA issue P10019563-41294 to trace)
  * here is a workround
  */
-#if !defined(CONFIG_SOC_NSIM) && !defined(CONFIG_SMP)
-	sleep r1
-#else
+#if defined(CONFIG_SOC_NSIM) && defined(CONFIG_SMP)
 	seti r1
 _z_arc_idle_loop:
 	b _z_arc_idle_loop
+#else
+	sleep r1
 #endif
 	j_s [blink]
 	nop