external: vim: Create vi symlink

Now we are using vim built from sources and also
we are dropping old one prebuilt vi.

This patch is adding "vi" symlink to vim and making all users happy.

Change-Id: I02cbd1ebcfc8bdb5b1c97712060f075af3554a7a
Signed-off-by: Humberto Borba <humberos@omnirom.org>
diff --git a/Android.mk b/Android.mk
index e96cd48..084e2b9 100644
--- a/Android.mk
+++ b/Android.mk
@@ -136,6 +136,10 @@
 LOCAL_REQUIRED_MODULES := vimrc
 include $(BUILD_EXECUTABLE)
 
+# Create vi symlink
+$(shell mkdir -p $(TARGET_OUT_OPTIONAL_EXECUTABLES))
+$(shell pushd $(TARGET_OUT_OPTIONAL_EXECUTABLES) > /dev/null && ln -sf vim vi && popd > /dev/null)
+
 # ========================================================
 # vim runtime files
 # ========================================================