drm: xlnx: sdi: Fix coding style (double space)

commit cea92a97da5283f0314db426c22dddf959574df6 from
https://github.com/Xilinx/linux-xlnx.git

 xlnx_rebase_v5.15

Trivial fix.

Signed-off-by: Michal Simek <michal.simek@amd.com>
State: pending
Signed-off-by: Quanyang Wang <quanyang.wang@windriver.com>