drm/amd/display: Don't show stack trace for missing eDP

Some systems are only connected by HDMI or DP, so warning related to
missing eDP is unnecessary.  Downgrade to debug instead.

Cc: Hamza Mahfooz <hamza.mahfooz@amd.com>
Fixes: 6d9b6dc ("drm/amd/display: only warn once in dce110_edp_wait_for_hpd_ready()")
Reported-by: Mastan.Katragadda@amd.com
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c

@@ -777,7 +777,8 @@ void dce110_edp_wait_for_hpd_ready(
 	dal_gpio_destroy_irq(&hpd);
 
 	/* ensure that the panel is detected */
-	ASSERT(edp_hpd_high);
+	if (!edp_hpd_high)
+		DC_LOG_DC("%s: wait timed out!\n", __func__);
 }
 
 void dce110_edp_power_control(