drm/tegra: dsi: Replace 1000000000UL by NSEC_PER_SEC

Using the symbolic constant instantly provides a lot more context.

Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Thierry Reding 2014-11-07 17:17:41 +01:00
commit 369bc65b6b