i915 build error on drm-misc-next

[Jeffrey Hugo]

With the x86_64_defconfig I see the following when building drm-misc-next:

   CC      drivers/gpu/drm/i915/display/intel_crt.o
   CC      drivers/gpu/drm/i915/display/intel_cx0_phy.o
   CC      drivers/gpu/drm/i915/display/intel_ddi.o
   CC      drivers/gpu/drm/i915/display/intel_ddi_buf_trans.o
   CC      drivers/gpu/drm/i915/display/intel_display_device.o
   CC      drivers/gpu/drm/i915/display/intel_display_trace.o
   CC      drivers/gpu/drm/i915/display/intel_dkl_phy.o
   CC      drivers/gpu/drm/i915/display/intel_dp.o
   CC      drivers/gpu/drm/i915/display/intel_dp_aux.o
   CC      drivers/gpu/drm/i915/display/intel_dp_aux_backlight.o
   CC      drivers/gpu/drm/i915/display/intel_dp_hdcp.o
   CC      drivers/gpu/drm/i915/display/intel_dp_link_training.o
   CC      drivers/gpu/drm/i915/display/intel_dp_mst.o
   CC      drivers/gpu/drm/i915/display/intel_dsi.o
   CC      drivers/gpu/drm/i915/display/intel_dsi_dcs_backlight.o
   CC      drivers/gpu/drm/i915/display/intel_dsi_vbt.o
   CC      drivers/gpu/drm/i915/display/intel_dvo.o
   CC      drivers/gpu/drm/i915/display/intel_gmbus.o
   CC      drivers/gpu/drm/i915/display/intel_hdmi.o
   CC      drivers/gpu/drm/i915/display/intel_lspcon.o
   CC      drivers/gpu/drm/i915/display/intel_lvds.o
   CC      drivers/gpu/drm/i915/display/intel_panel.o
   CC      drivers/gpu/drm/i915/display/intel_pps.o
drivers/gpu/drm/i915/display/intel_dp.c: In function 
‘intel_write_dp_vsc_sdp’:
drivers/gpu/drm/i915/display/intel_dp.c:4232:15: error: implicit 
declaration of function ‘intel_dp_vsc_sdp_pack’; did you mean 
‘drm_dp_vsc_sdp_pack’? [-Werror=implicit-function-declaration]
  4232 |         len = intel_dp_vsc_sdp_pack(vsc, &sdp, sizeof(sdp));
       |               ^~~~~~~~~~~~~~~~~~~~~
       |               drm_dp_vsc_sdp_pack

Is this a known issue?

-Jeff