drm/amd/display: use num_timing_generator instead of pipe_count

The two are not necessarily the same.
Signed-off-by: Ken Chalmers <ken.chalmers@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c

@@ -202,7 +202,7 @@ static void dcn10_log_hw_state(struct dc *dc)
 	DTN_INFO("OTG:\t v_bs \t v_be \t v_ss \t v_se \t vpol \t vmax \t vmin \t "
 			"h_bs \t h_be \t h_ss \t h_se \t hpol \t htot \t vtot \t underflow\n");
 
-	for (i = 0; i < pool->pipe_count; i++) {
+	for (i = 0; i < pool->res_cap->num_timing_generator; i++) {
 		struct timing_generator *tg = pool->timing_generators[i];
 		struct dcn_otg_state s = {0};