zephyr: cpu: init cpu if context save is not support

Fix multicore test issue on cavs platforms which don't support context
save now, so need to init cpu when the core boot up.

Signed-off-by: Rander Wang <rander.wang@intel.com>

Author: RanderWang

zephyr/lib/cpu.c

@@ -148,7 +148,9 @@ int cpu_enable_core(int id)
 	 * initialization. By reinitializing the idle thread, we would overwrite the kernel structs
 	 * and the idle thread stack.
 	 */
+#ifdef CONFIG_ADSP_IMR_CONTEXT_SAVE
 	if (pm_state_next_get(id)->state == PM_STATE_ACTIVE)
+#endif
 		z_init_cpu(id);
 #endif