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/Android.mk b/Android.mk
index 920b08a..699a601 100755
--- a/Android.mk
+++ b/Android.mk
@@ -138,6 +138,7 @@
     TW_USE_TOOLBOX := true
     TW_EXCLUDE_MTP := true
     TW_EXCLUDE_TZDATA := true
+    TW_EXCLUDE_NANO := true
 endif
 
 ifeq ($(AB_OTA_UPDATER),true)
@@ -413,6 +414,13 @@
     tzdata_twrp
 endif
 
+ifneq ($(TW_EXCLUDE_NANO), true)
+TWRP_REQUIRED_MODULES += \
+    nano_twrp \
+    nano.rc
+endif
+
+
 ifneq ($(TW_INCLUDE_CRYPTO),)
 TWRP_REQUIRED_MODULES += \
     hwservicemanager \