Merge pull request #9222 from aabadie/uncrustify_newline_eof

uncrustify: add check for no newline at end of file

uncrustify-riot.cfg

@@ -24,6 +24,8 @@ nl_func_var_def_blk    = 1        #
 nl_fcall_brace         = remove   # "list_for_each() {" vs "list_for_each()\n{"
 nl_fdef_brace          = add      # "int foo() {" vs "int foo()\n{"
 nl_collapse_empty_body = true     # set while(){\n} to while(){}
+nl_end_of_file         = add      # fix no newline at end of file
+nl_end_of_file_min     = 1        #
 
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 # Source code modifications