drm/amd/display: Add DCN315 blocks to Makefile

Signed-off-by: Qingqing Zhuo <qingqing.zhuo@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/Makefile

@@ -36,6 +36,7 @@ DC_LIBS += dcn301
 DC_LIBS += dcn302
 DC_LIBS += dcn303
 DC_LIBS += dcn31
+DC_LIBS += dcn315
 DC_LIBS += dcn316
 endif