drm/amd/display: Add missing SMU version

This commit add PP_SMU_VER_VG to the pp_smu_ver list.

Acked-by: Wayne Lin <[e-mail]>
Signed-off-by: Rodrigo Siqueira <[e-mail]>
Tested-by: Daniel Wheeler <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/display/dc/dm_pp_smu.h

···
 	PP_SMU_UNSUPPORTED,
 	PP_SMU_VER_RV,
 	PP_SMU_VER_NV,
-	PP_SMU_VER_RN,
 
+	PP_SMU_VER_RN,
+	PP_SMU_VER_VG,
 	PP_SMU_VER_MAX
 };