Clearly, someone tried to solve the following warning:
kms_rotation_crc.c:189:6: warning: no previous prototype for ‘check_plane_type’ [-Wmissing-prototypes]
Without really understanding what was the warning about. Make
check_plane_type() static and move it before its user to get rid of the forward
declaration.
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>