forcing DP connector doesn't work well and tests are skipping
with unsupported mode, add new test which runs test on connected
outputs only.

v2: added debug print for better clarity of skips on unsupported mode

v3: added new line in info
    moved skip after test_init
    updated test_init logic based on physical flag

Cc: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Kunal Joshi <kunal1.joshi@intel.com>
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>

Hello Aurabindo,

Since the changes are minor i am keeping your rb, planning to merge this by EOD.
Please let me know if you see any concerns.

Thanks and Regards
Kunal Joshi