drm/amd/display/dc/dce112/Makefile: Ignore -Woverride-init warning

This file uses a complex abstracted set of hierarchical macros to
setup its applicable register lists within constant structures.
However in the case of TMDS_CNTL we wish to mark it as not applicable
for this use-case.

One method would be to de-const all of the definitions and users, then
manually zero out TMDS_CNTL from the list.  Another would be to create
a new set of hierarchical macros to omit TMDS_CNTL entirely.  Both
would entail a great deal of unnecessary changes and maintenance
burden.

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/amd/amdgpu/../display/dc/dce112/dce112_resource.c:286:15: warning: initialized field overwritten [-Woverride-init]
 drivers/gpu/drm/amd/amdgpu/../display/dc/dce112/dce112_resource.c:290:2: note: in expansion of macro ‘stream_enc_regs’
 drivers/gpu/drm/amd/amdgpu/../display/dc/dce112/dce112_resource.c:286:15: note: (near initialization for ‘stream_enc_regs[0].TMDS_CNTL’)
 drivers/gpu/drm/amd/amdgpu/../display/dc/dce112/dce112_resource.c:290:2: note: in expansion of macro ‘stream_enc_regs’
 drivers/gpu/drm/amd/amdgpu/../display/dc/dce112/dce112_resource.c:286:15: warning: initialized field overwritten [-Woverride-init]
 drivers/gpu/drm/amd/amdgpu/../display/dc/dce112/dce112_resource.c:291:2: note: in expansion of macro ‘stream_enc_regs’
 drivers/gpu/drm/amd/amdgpu/../display/dc/dce112/dce112_resource.c:286:15: note: (near initialization for ‘stream_enc_regs[1].TMDS_CNTL’)
 drivers/gpu/drm/amd/amdgpu/../display/dc/dce112/dce112_resource.c:291:2: note: in expansion of macro ‘stream_enc_regs’
 drivers/gpu/drm/amd/amdgpu/../display/dc/dce112/dce112_resource.c:286:15: warning: initialized field overwritten [-Woverride-init]
 drivers/gpu/drm/amd/amdgpu/../display/dc/dce112/dce112_resource.c:292:2: note: in expansion of macro ‘stream_enc_regs’
 drivers/gpu/drm/amd/amdgpu/../display/dc/dce112/dce112_resource.c:286:15: note: (near initialization for ‘stream_enc_regs[2].TMDS_CNTL’)
 drivers/gpu/drm/amd/amdgpu/../display/dc/dce112/dce112_resource.c:292:2: note: in expansion of macro ‘stream_enc_regs’
 drivers/gpu/drm/amd/amdgpu/../display/dc/dce112/dce112_resource.c:286:15: warning: initialized field overwritten [-Woverride-init]
 drivers/gpu/drm/amd/amdgpu/../display/dc/dce112/dce112_resource.c:293:2: note: in expansion of macro ‘stream_enc_regs’
 drivers/gpu/drm/amd/amdgpu/../display/dc/dce112/dce112_resource.c:286:15: note: (near initialization for ‘stream_enc_regs[3].TMDS_CNTL’)
 drivers/gpu/drm/amd/amdgpu/../display/dc/dce112/dce112_resource.c:293:2: note: in expansion of macro ‘stream_enc_regs’
 drivers/gpu/drm/amd/amdgpu/../display/dc/dce112/dce112_resource.c:286:15: warning: initialized field overwritten [-Woverride-init]
 drivers/gpu/drm/amd/amdgpu/../display/dc/dce112/dce112_resource.c:294:2: note: in expansion of macro ‘stream_enc_regs’
 drivers/gpu/drm/amd/amdgpu/../display/dc/dce112/dce112_resource.c:286:15: note: (near initialization for ‘stream_enc_regs[4].TMDS_CNTL’)
 drivers/gpu/drm/amd/amdgpu/../display/dc/dce112/dce112_resource.c:294:2: note: in expansion of macro ‘stream_enc_regs’
 drivers/gpu/drm/amd/amdgpu/../display/dc/dce112/dce112_resource.c:286:15: warning: initialized field overwritten [-Woverride-init]
 drivers/gpu/drm/amd/amdgpu/../display/dc/dce112/dce112_resource.c:295:2: note: in expansion of macro ‘stream_enc_regs’
 drivers/gpu/drm/amd/amdgpu/../display/dc/dce112/dce112_resource.c:286:15: note: (near initialization for ‘stream_enc_regs[5].TMDS_CNTL’)
 drivers/gpu/drm/amd/amdgpu/../display/dc/dce112/dce112_resource.c:295:2: note: in expansion of macro ‘stream_enc_regs’

Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Leo Li <sunpeng.li@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: amd-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dce112/Makefile

@@ -23,6 +23,8 @@
 # Makefile for the 'controller' sub-component of DAL.
 # It provides the control and status of HW CRTC block.
 
+CFLAGS_$(AMDDALPATH)/dc/dce112/dce112_resource.o = $(call cc-disable-warning, override-init)
+
 DCE112 = dce112_compressor.o dce112_hw_sequencer.o \
 dce112_resource.o