video: tegra: dsi: add delay after register write

video: tegra: dsi: add delay after register write

Providing a small delay after writing to dc registers while
stopping dc stream helps in stabilizing the registers. This
helps in resolving the intermittent register read failure issue.

bug 200087039

Change-Id: I159d1d75aa2472b9e33bc42d890382f33def218a
Signed-off-by: Naveen Kumar S <nkumars@nvidia.com>
Reviewed-on: http://git-master/r/746062
Reviewed-by: Animesh Kishore <ankishore@nvidia.com>
Reviewed-by: Pankaj Dabade <pdabade@nvidia.com>
Reviewed-by: Venkat Moganty <vmoganty@nvidia.com>