Hi Olaf,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.17-rc7]
[cannot apply to next-20180530]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Gabriel-Krisman-Bertazi/NLS-refactor-and-UTF-8-normalization/20180522-234546
config: openrisc-allmodconfig (attached as .config)
compiler: or1k-linux-gcc (GCC) 6.0.0 20160327 (experimental)
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=openrisc 

All errors (new ones prefixed by >>):

>> make[3]: *** No rule to make target 'fs/nls/ucd/*.txt', needed by 'fs/nls/utf8data.h'.
   make[3]: Target '__build' not remade because of errors.

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