nano: make executables class

Also fix bad separator in Android.mk

Change-Id: I756f8ac42ccb604f191e9439cd7978cfa0ce0995
diff --git a/Android.mk b/Android.mk
index 5935486..0b7853f 100755
--- a/Android.mk
+++ b/Android.mk
@@ -409,7 +409,7 @@
     vendor_hwservice_contexts \
     minadbd \
     twrpbu \
-    adbd_system_api_recovery
+    adbd_system_api_recovery \
     me.twrp.twrpapp.apk \
     privapp-permissions-twrpapp.xml