drm/amd/display: Add ENGINE_ID_DIGD condition check for Navi14

[Why]
Navi10 has 6 PHY, but Navi14 only has 5 PHY, that is
because there is no ENGINE_ID_DIGD in Navi14. Without
this patch, many HDMI related issues (e.g. HDMI S3
resume failure, HDMI pink screen on boot) will be
observed.

[How]
If "eng_id" is larger than ENGINE_ID_DIGD, then
add "eng_id" by 1.
Signed-off-by: Zhan Liu <zhan.liu@amd.com>
Reviewed-by: Hersen Wu <hersenxs.wu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c

@@ -1152,6 +1152,11 @@ struct stream_encoder *dcn20_stream_encoder_create(
 	if (!enc1)
 		return NULL;
 
+	if (ASICREV_IS_NAVI14_M(ctx->asic_id.hw_internal_rev)) {
+		if (eng_id >= ENGINE_ID_DIGD)
+			eng_id++;
+	}
+
 	dcn20_stream_encoder_construct(enc1, ctx, ctx->dc_bios, eng_id,
 					&stream_enc_regs[eng_id],
 					&se_shift, &se_mask);