audio: add new path for diag tools

amp1 = Top speaker
amp2 = Bottom speaker

Bug: 215307768
Test: Builds
Change-Id: Id285b89ac10d5e453b27a9bb1fa9fe8ef0a14fc6
Signed-off-by: Robert Lee <lerobert@google.com>

audio/lynx/config/mixer_paths.xml

@@ -676,6 +676,14 @@
         <ctl name="R Fast Use Case Switch Enable" value="1" />
     </path>
 
+    <path name="speaker-amp1">
+        <ctl name="Main AMP Enable Switch" value="1"/>
+    </path>
+
+    <path name="speaker-amp2">
+        <ctl name="R Main AMP Enable Switch" value="1"/>
+    </path>
+
     <path name="usb-tty-full">
     </path>