ARM: dts: hammerhead: Set mdss-pref-prim-intf to dsi

Panel type is DSI. This prop is needed after fully syncing mdss_mdp with CAF kk_3.5

Signed-off-by: Sultanxda <sultanxda@gmail.com>
build script: Add mdss_mdp.panel=dsi to cmdline

Panel type is DSI. Needed after fully syncing mdss_mdp with CAF kk_3.5

Signed-off-by: Sultanxda <sultanxda@gmail.com>