audio: mixer_paths: Rename mixer paths from hdmi to default audio out

Rename mixer path names to generic "default_" audio out instead
of "hdmi_" audio out. Naming the mixer paths with "hdmi_" prefix
was a shortsighted move and turned out the newer devboards come
with on-board speakers as well.

Change-Id: I21e24ecb6ead8a6c924058cc6f479ed77a215587
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
diff --git a/audio/audio_hw.c b/audio/audio_hw.c
index 75d3ff0..5f42ac9 100644
--- a/audio/audio_hw.c
+++ b/audio/audio_hw.c
@@ -1124,8 +1124,8 @@
         hw_device_t** device)
 {
     char vendor_hw[PROPERTY_VALUE_MAX] = {0};
-    // Prefix for the hdmi path, the board name is the suffix
-    char path_name[256] = "hdmi_";
+    // Prefix for the default audio out path, the board name is the suffix
+    char path_name[256] = "default_";
     ALOGV("adev_open: %s", name);
 
     if (strcmp(name, AUDIO_HARDWARE_INTERFACE) != 0) {
diff --git a/etc/mixer_paths.xml b/etc/mixer_paths.xml
index 966e1ef..db76b6c 100644
--- a/etc/mixer_paths.xml
+++ b/etc/mixer_paths.xml
@@ -1,11 +1,11 @@
 <mixer>
-    <!-- Enable HDMI out for db845c -->
-    <path name="hdmi_db845c">
+    <!-- Enable HDMI as default audio out for db845c -->
+    <path name="default_db845c">
         <ctl name="QUAT_MI2S_RX Audio Mixer MultiMedia1" value="1" />
     </path>
 
-    <!-- Enable HDMI out for rb5 -->
-    <path name="hdmi_rb5">
+    <!-- Enable HDMI as default audio out for rb5 -->
+    <path name="default_rb5">
         <ctl name="TERT_MI2S_RX Audio Mixer MultiMedia1" value="1" />
     </path>
 </mixer>