drm/amd/display: Refactor HUBBUB into component folder for DCN401

[why]
Cleaning up the code refactor requires hubbub to be in its own
component.

[how]
Move all DCN401 files under newly created hubbub folder and fixing the
makefiles.
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Harikrishna Revalla <Harikrishna.Revalla@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dcn401/Makefile

@@ -6,7 +6,6 @@ DCN401 += dcn401_dio_link_encoder.o
 DCN401 += dcn401_dio_stream_encoder.o
 DCN401 += dcn401_hubp.o
 DCN401 += dcn401_mpc.o
-DCN401 += dcn401_hubbub.o
 
 AMD_DAL_DCN401 = $(addprefix $(AMDDALPATH)/dc/dcn401/,$(DCN401))
 

drivers/gpu/drm/amd/display/dc/hubbub/Makefile

@@ -94,7 +94,11 @@ AMD_DAL_HUBBUB_DCN35 = $(addprefix $(AMDDALPATH)/dc/hubbub/dcn35/,$(HUBBUB_DCN35
 AMD_DISPLAY_FILES += $(AMD_DAL_HUBBUB_DCN35)
 
 ###############################################################################
+HUBBUB_DCN401 = dcn401_hubbub.o
 
+AMD_DAL_HUBBUB_DCN401 = $(addprefix $(AMDDALPATH)/dc/hubbub/dcn401/,$(HUBBUB_DCN401))
+
+AMD_DISPLAY_FILES += $(AMD_DAL_HUBBUB_DCN401)
 
 ###############################################################################
-endif
+endif
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