Add FM Serial interface to allow FM HAL send/receive cmds/events

FM Serial interface provides APIs for FM HAL layer to send cmds
and receive events/data to and from the Controller.

Change-Id: Idbe21e536a6039387c7411b8a9322417e4ec6129
diff --git a/fm_hci/Android.mk b/fm_hci/Android.mk
new file mode 100644
index 0000000..1c4b949
--- /dev/null
+++ b/fm_hci/Android.mk
@@ -0,0 +1,37 @@
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+# Setup bdroid local make variables for handling configuration
+ifneq ($(BOARD_BLUETOOTH_BDROID_BUILDCFG_INCLUDE_DIR),)
+  bdroid_C_INCLUDES := $(BOARD_BLUETOOTH_BDROID_BUILDCFG_INCLUDE_DIR)
+  bdroid_CFLAGS += -DHAS_BDROID_BUILDCFG
+else
+  bdroid_C_INCLUDES :=
+  bdroid_CFLAGS += -DHAS_NO_BDROID_BUILDCFG
+endif
+
+BDROID_DIR:= external/bluetooth/bluedroid
+
+LOCAL_CFLAGS += $(bdroid_CFLAGS)
+
+LOCAL_SRC_FILES := \
+	fm_hci.c
+
+LOCAL_SHARED_LIBRARIES := \
+         libdl \
+         libcutils
+
+LOCAL_CFLAGS := -Wno-unused-parameter
+
+LOCAL_CFLAGS += -std=c99
+
+LOCAL_C_INCLUDES += \
+        $(BDROID_DIR)/hci/include \
+        $(LOCAL_PATH)/../helium
+
+LOCAL_MODULE := libfm-hci
+LOCAL_MODULE_TAGS := optional
+LOCAL_MODULE_CLASS := SHARED_LIBRARIES
+
+include $(BUILD_SHARED_LIBRARY)