post_proc: Add bengal to the list

Without this libvolumelistener doesn't compile.

Signed-off-by: Gagan Malvi <malvigagan@gmail.com>
Change-Id: I23f2a81723257c173397edcbb9ac081bcf51014b
diff --git a/post_proc/Android.mk b/post_proc/Android.mk
index 862b81b..7d5b41d 100644
--- a/post_proc/Android.mk
+++ b/post_proc/Android.mk
@@ -153,7 +153,7 @@
 
 ################################################################################
 
-ifneq ($(filter msm8992 msm8994 msm8996 msm8998 sdm660 sdm845 apq8098_latv sdm710 msm8953 msm8937 qcs605 sdmshrike msmnile kona lahaina holi atoll $(MSMSTEPPE) $(TRINKET) lito,$(TARGET_BOARD_PLATFORM)),)
+ifneq ($(filter msm8992 msm8994 msm8996 msm8998 sdm660 sdm845 apq8098_latv sdm710 msm8953 msm8937 qcs605 sdmshrike msmnile kona lahaina holi atoll $(MSMSTEPPE) $(TRINKET) lito bengal,$(TARGET_BOARD_PLATFORM)),)
 
 include $(CLEAR_VARS)