hal: Add support for compressed capture

- Add support for AMR-WB compressed capture.

Change-Id: Ief591c5d1ccc6f8afb408abfff447787ee7bd7aa
diff --git a/hal/msm8960/platform.c b/hal/msm8960/platform.c
index 089b2ec..43bef81 100644
--- a/hal/msm8960/platform.c
+++ b/hal/msm8960/platform.c
@@ -897,3 +897,9 @@
             return 0;
     }
 }
+
+int platform_update_usecase_from_source(int source, int usecase)
+{
+    ALOGV("%s: input source :%d", __func__, source);
+    return usecase;
+}