audio: Enable hw aac encoder by default

 -enable the property to use hw aac encoder
  by default

Change-Id: I2224d84ad5350eea841d328a5bef1dafdcd56651
diff --git a/configs/msm8996/msm8996.mk b/configs/msm8996/msm8996.mk
index 0bdff27..fd070d3 100644
--- a/configs/msm8996/msm8996.mk
+++ b/configs/msm8996/msm8996.mk
@@ -164,3 +164,6 @@
 PRODUCT_PROPERTY_OVERRIDES += \
 audio.parser.ip.buffer.size=262144
 
+#enable hw aac encoder by default
+PRODUCT_PROPERTY_OVERRIDES += \
+qcom.hw.aac.encoder=true