drm/amd/display: Increase MAX_LINKS by 2

Two additional virtual links are created and thus increasing size
for dc->links by two.
Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Acked-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Signed-off-by: Alex Hung <alex.hung@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/inc/hw/hw_shared.h

@@ -44,7 +44,7 @@
  */
 #define MAX_PIPES 6
 #define MAX_PHANTOM_PIPES (MAX_PIPES / 2)
-#define MAX_LINKS (MAX_PIPES * 2)
+#define MAX_LINKS (MAX_PIPES * 2 +2)
 #define MAX_DIG_LINK_ENCODERS 7
 #define MAX_DWB_PIPES	1
 #define MAX_HPO_DP2_ENCODERS	4