spi: core: Use list_first_entry to extract head of queue

For slightly better readability.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Axel Lin 2014-01-09 16:03:58 +08:00 • committed by Mark Brown
commit a89e2d2754