drm/amd/display: Fill display clock and vblank time in dce110_fill_display_configs

commit 7d07140d upstream.

Also needed by DCE 6.
This way the code that gathers this info can be shared between
different DCE versions and doesn't have to be repeated.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Rodrigo Siqueira <siqueira@igalia.com>
Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 8107432d)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>