exynos_camera: update sports scene name

The 'sports' scene mode has been renamed to 'action' scene mode
to match the 4.4 camera configuration

Change-Id: I7c3d3bd35765330adfeb43820e12056b4593702f

Patchset: 1
https://gerrit.omnirom.org/#/c/3231/
(cherry picked from commit 16b553ab890fc1377194c80ea4918bddf666317a)