xduoox20: Start unmuted, as the least-worst option

Change-Id: Ie85d9df0f861315dfc9d767218d86115420aa9d7

firmware/drivers/audio/xduoolinux_codec.c

@@ -126,7 +126,13 @@ void audiohw_preinit(void)
     logf("hw preinit");
     alsa_controls_init();
     hw_open();
+
+#if defined(XDUOO_X3II)
     audiohw_mute(true);  /* Start muted to avoid the POP */
+#else
+    audiohw_mute(false);  /* No need */
+#endif
+
 //    const char * const codec_pmdown = "/sys/devices/platform/ingenic-x3ii.0/x3ii-ak4490-i2s/pmdown_time";  // in ms, defaults 5000
 }
 

firmware/export/xduoolinux_codec.h

@@ -14,6 +14,10 @@ AUDIOHW_SETTING(FILTER_ROLL_OFF, "", 0, 1, 0, 4, 0)
 #define AUDIOHW_MUTE_ON_SRATE_CHANGE
 #endif
 
+#if defined(XDUOO_X20)
+//#define AUDIOHW_NEEDS_INITIAL_UNMUTE
+#endif
+
 void audiohw_mute(int mute);
 void xduoo_set_output(int ps);
 int xduoo_get_outputs(void);