hosted: Fix a corner case in umuting the x3ii and erosq

Change-Id: I3ffc3b82c6137bab3f27cd87ccc57c2f03a1d401

firmware/drivers/audio/erosqlinux_codec.c

@@ -74,6 +74,7 @@ void audiohw_mute(int mute)
     }
     else
     {
+        last_ps = 0;
         erosq_get_outputs();
     }
 }

firmware/drivers/audio/xduoolinux_codec.c

@@ -73,6 +73,7 @@ void audiohw_mute(int mute)
     }
     else
     {
+        last_ps = 0;
         xduoo_get_outputs();
     }
 }