Include nano in TWRP by default

Use 'TW_EXCLUDE_NANO := true' to exclude from build

Will be excluded by default if 'TW_OEM_BUILD := true' is set

Change-Id: I812399ef9f3f5d3c7d4baf981924d49255c16e5a
diff --git a/etc/Android.mk b/etc/Android.mk
index 26d86d6..db7b37f 100755
--- a/etc/Android.mk
+++ b/etc/Android.mk
@@ -58,6 +58,15 @@
 LOCAL_SRC_FILES := init.recovery.ldconfig.rc
 include $(BUILD_PREBUILT)
 
+include $(CLEAR_VARS)
+LOCAL_MODULE := nano.rc
+LOCAL_MODULE_TAGS := optional
+LOCAL_MODULE_CLASS := RECOVERY_EXECUTABLES
+LOCAL_MODULE_PATH := $(TARGET_RECOVERY_ROOT_OUT)/system/etc/init
+
+LOCAL_SRC_FILES := init/$(LOCAL_MODULE)
+include $(BUILD_PREBUILT)
+
 ifeq ($(AB_OTA_UPDATER),true)
 	include $(CLEAR_VARS)
 	LOCAL_MODULE := android.hardware.boot@1.0-service.rc