hal: Add support for ferrum(8909) sound cards

-Add entry for ferrum(8909) sound card name

Change-Id: I64989e184b97f1ae0f1365da29b61297d579f6ac
diff --git a/hal/Android.mk b/hal/Android.mk
index 39e5458..33af61c 100644
--- a/hal/Android.mk
+++ b/hal/Android.mk
@@ -26,10 +26,13 @@
 endif
 endif
 
-ifneq ($(filter msm8916,$(TARGET_BOARD_PLATFORM)),)
+ifneq ($(filter msm8916 ferrum,$(TARGET_BOARD_PLATFORM)),)
   AUDIO_PLATFORM = msm8916
   MULTIPLE_HW_VARIANTS_ENABLED := true
   LOCAL_CFLAGS := -DPLATFORM_MSM8916
+ifneq ($(filter ferrum,$(TARGET_BOARD_PLATFORM)),)
+  LOCAL_CFLAGS := -DPLATFORM_MSM8909
+endif
 endif
 
 LOCAL_SRC_FILES := \