spi: omap-100k: fix spacing coding style issue

Fix the following checkpatch issues.

  ERROR: space prohibited after that open parenthesis '('
  ERROR: space required before the open parenthesis '('
  ERROR: trailing statements should be on next line
  ERROR: space required after that ',' (ctx:VxV)
  ERROR: spaces required around that '-=' (ctx:VxV)
  WARNING: sizeof *cs should be sizeof(*cs)

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Mark Brown <broonie@linaro.org>