[PATCH i-g-t v2] tests/intel/xe_pxp: Require output for display tests

The subtests display-pxp-fb and display-black-pxp-fb both call the
function igt_create_color_fb with a width and height value generated by
getting outputs from for_each_connected_output and selecting the maximum
width and height among all available connected outputs.  If there are no
such outputs, then the resulting values will be zero, which is an invalid
input for the DRM_IOCLT_MODE_CREATE_DUMB ioctl.

Skip these tests if there are no connected outputs.

v2:
- Use correct ioctl name (jcavitt)
- Add missing closes tag (jcavitt)
- Use igt_display_require_output in require_display instead (Daniele)

Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/work_items/7738
Signed-off-by: Jonathan Cavitt <[email protected]>
Cc: Daniele Ceraolo Spurio <[email protected]>
Cc: Ville Syrjälä <[email protected]>
---
 tests/intel/xe_pxp.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tests/intel/xe_pxp.c b/tests/intel/xe_pxp.c
index 9320078733..5460bf6db1 100644
--- a/tests/intel/xe_pxp.c
+++ b/tests/intel/xe_pxp.c
@@ -1002,6 +1002,7 @@ static void require_display(int xe_fd, igt_display_t *display)
 {
 	igt_require_pipe_crc(xe_fd);
 	igt_display_require(display, xe_fd);
+	igt_display_require_output(display);
 }
 
 static void dpms_on_off(int fd, drmModeResPtr res, int mode)
-- 
2.53.0