drm/amd/display/dc/dce60/Makefile: Ignore -Woverride-init warning

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

In file included from drivers/gpu/drm/amd/amdgpu/../display/dc/dce60/dce60_resource.c:28:
drivers/gpu/drm/amd/amdgpu/../include/asic_reg/dce/dce_6_0_d.h:568:43: warning: initialized field overwritten [-Woverride-init]
drivers/gpu/drm/amd/amdgpu/../display/dc/dce60/dce60_resource.c:155:14: note: in expansion of macro ‘mmCRTC0_DCFE_MEM_LIGHT_SLEEP_CNTL’
drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_transform.h:170:2: note: in expansion of macro ‘SRI’
drivers/gpu/drm/amd/amdgpu/../display/dc/dce60/dce60_resource.c:181:3: note: in expansion of macro ‘XFM_COMMON_REG_LIST_DCE60’
drivers/gpu/drm/amd/amdgpu/../display/dc/dce60/dce60_resource.c:185:3: note: in expansion of macro ‘transform_regs’
drivers/gpu/drm/amd/amdgpu/../include/asic_reg/dce/dce_6_0_d.h:568:43: note: (near initialization for ‘xfm_regs[0].DCFE_MEM_LIGHT_SLEEP_CNTL’)
drivers/gpu/drm/amd/amdgpu/../display/dc/dce60/dce60_resource.c:155:14: note: in expansion of macro ‘mmCRTC0_DCFE_MEM_LIGHT_SLEEP_CNTL’
drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_transform.h:170:2: note: in expansion of macro ‘SRI’
drivers/gpu/drm/amd/amdgpu/../display/dc/dce60/dce60_resource.c:181:3: note: in expansion of macro ‘XFM_COMMON_REG_LIST_DCE60’
drivers/gpu/drm/amd/amdgpu/../display/dc/dce60/dce60_resource.c:185:3: note: in expansion of macro ‘transform_regs’
drivers/gpu/drm/amd/amdgpu/../include/asic_reg/dce/dce_6_0_d.h:645:43: warning: initialized field overwritten [-Woverride-init]
drivers/gpu/drm/amd/amdgpu/../display/dc/dce60/dce60_resource.c:155:14: note: in expansion of macro ‘mmCRTC1_DCFE_MEM_LIGHT_SLEEP_CNTL’
drivers/gpu/drm/amd/amdgpu/../display/dc/dce/dce_transform.h:170:2: note: in expansion of macro ‘SRI’
drivers/gpu/drm/amd/amdgpu/../display/dc/dce60/dce60_resource.c:181:3: note: in expansion of macro ‘XFM_COMMON_REG_LIST_DCE60’

NB: Snipped lots for the sake of brevity

Cc: Harry Wentland <[e-mail]>
Cc: Leo Li <[e-mail]>
Cc: Alex Deucher <[e-mail]>
Cc: "Christian König" <[e-mail]>
Cc: David Airlie <[e-mail]>
Cc: Daniel Vetter <[e-mail]>
Cc: Mauro Rossi <[e-mail]>
Cc: [e-mail]
Cc: [e-mail]
Signed-off-by: Lee Jones <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/display/dc/dce60/Makefile

···
 # Makefile for the 'controller' sub-component of DAL.
 # It provides the control and status of HW CRTC block.
 
+CFLAGS_AMDDALPATH)/dc/dce60/dce60_resource.o = $(call cc-disable-warning, override-init)
+
 DCE60 = dce60_timing_generator.o dce60_hw_sequencer.o \
 	dce60_resource.o