spi/dw_spi: add return value to empty mrst_spi_debugfs_init()
As per the function signature. Signed-off-by: NGeorge Shore <george@georgeshore.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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As per the function signature. Signed-off-by: NGeorge Shore <george@georgeshore.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>