mm-audio: omx: add 64 bit support

-Changes to support omx encoders on 64 bit platform

Change-Id: I05749f619efaf66e107b1438635a38f92a11b523
diff --git a/mm-audio/aenc-qcelp13/qdsp6/Android.mk b/mm-audio/aenc-qcelp13/qdsp6/Android.mk
index 5aaa3bf..1c9ffe1 100644
--- a/mm-audio/aenc-qcelp13/qdsp6/Android.mk
+++ b/mm-audio/aenc-qcelp13/qdsp6/Android.mk
@@ -13,6 +13,7 @@
 libOmxQcelp13Enc-def += -D_ENABLE_QC_MSG_LOG_
 libOmxQcelp13Enc-def += -DVERBOSE
 libOmxQcelp13Enc-def += -D_DEBUG
+libOmxQcelp13Enc-def += -Wconversion
 ifeq ($(strip $(TARGET_USES_QCOM_MM_AUDIO)),true)
 libOmxQcelp13Enc-def += -DAUDIOV2
 endif