drm/i915: Move TRANS_DDI_FUNC_CTL2 programming where it belongs

This port sync enable/disable stuff is misplaced. It's just another step
of the normal TRANS_DDI_FUNC_CTL enable. Move it to its natural place.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200313164831.5980-3-ville.syrjala@linux.intel.com


Reviewed-by: Manasi Navare <manasi.d.navare@intel.com>