update logging for ro.audio.silent

Bug: 327844864
Test: m
Change-Id: I1d9c039e247a377560d58319f9edaf38cbbbff96
diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index d1a09a4..1859716 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -3509,7 +3509,7 @@
             char *endptr;
             unsigned long ul = strtoul(value, &endptr, 0);
             if (*endptr == '\0' && ul != 0) {
-                ALOGD("Silence is golden");
+                ALOGW("%s: mute from ro.audio.silent. Silence is golden", __func__);
                 // The setprop command will not allow a property to be changed after
                 // the first time it is set, so we don't have to worry about un-muting.
                 setMasterMute_l(true);