update dnr_init_flag

sw_usb_audio/app_usb_aud_phaten_golden_6ch/src/extensions/dsp.c

@@ -92,9 +92,12 @@ void key_receiver(chanend_t c)
 {
     debug_printf("===> key_receiver\n");
 #if DNR_ENABLE
-    while (g_dnr_init_flag == 0) {
+    unsigned dnr_init_flag = 0;
+    while (dnr_init_flag == 0) {
+        GET_SHARED_GLOBAL(dnr_init_flag, g_dnr_init_flag);
         asm("nop");
     }
+
 #endif
    // tile0
     // load the license key