serial: sh-sci: Tidy up build warnings.
The recent sh-sci DMA support introduces a number of trivial build
warnings, clean them up.
Signed-off-by: 
Paul Mundt <lethal@linux-sh.org>
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The recent sh-sci DMA support introduces a number of trivial build
warnings, clean them up.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>