[PATCH] drm/amd/display: fix a missing prototype warning in DCN303

[Aurabindo Pillai <aurabindo.pillai@xxxxxxx>]

[Why&How]
A missing include statement triggered a warning when running
a build with W=1:

>> drivers/gpu/drm/amd/amdgpu/../display/dc/dcn303/dcn303_init.c:30:6: warning: no previous prototype for 'dcn303_hw_sequencer_construct' [-Wmissing-prototypes]
      30 | void dcn303_hw_sequencer_construct(struct dc *dc)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Fixes: cd6d421e3d1a (drm/amd/display: Initial DC support for Beige Goby)
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@xxxxxxx>
---
 drivers/gpu/drm/amd/display/dc/dcn303/dcn303_init.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn303/dcn303_init.c b/drivers/gpu/drm/amd/display/dc/dcn303/dcn303_init.c
index aa5dbbade2bd..d59b24a972bc 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn303/dcn303_init.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn303/dcn303_init.c
@@ -7,6 +7,7 @@
 
 #include "dcn303_hwseq.h"
 #include "dcn30/dcn30_init.h"
+#include "dcn303_init.h"
 #include "dc.h"
 
 void dcn303_hw_sequencer_construct(struct dc *dc)
-- 
2.30.2