NBAIO::Format_from_SR_C requires audio_format_t parameter

Change-Id: I8bdfbd227dbfd4a46eb7ffc82ec7064582a626d0
diff --git a/modules/audio_remote_submix/audio_hw.cpp b/modules/audio_remote_submix/audio_hw.cpp
index 9df17b6..6b14aa5 100644
--- a/modules/audio_remote_submix/audio_hw.cpp
+++ b/modules/audio_remote_submix/audio_hw.cpp
@@ -566,7 +566,8 @@
     // initialize pipe
     {
         ALOGV("  initializing pipe");
-        const NBAIO_Format format = Format_from_SR_C(config->sample_rate, 2);
+        const NBAIO_Format format = Format_from_SR_C(config->sample_rate,
+                popcount(config->channel_mask), config->format);
         const NBAIO_Format offers[1] = {format};
         size_t numCounterOffers = 0;
         // creating a MonoPipe with optional blocking set to true.