drm/amd/display: Fix wrong array size dummy_boolean of dml2_core_calcs_mode_support_locals

[Why]
Coverity reports OVERRUN warning for
CalculateSwathAndDETConfiguration_params->hw_debug5
= &s->dummy_boolean[2].
bool dummy_boolean[2] is defined within
struct dml2_core_calcs_mode_support_locals.

[How]
Change array size from 2 to 3.
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Acked-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Hersen Wu <hersenxs.wu@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/dml2/dml21/src/dml2_core/dml2_core_shared_types.h

@@ -854,7 +854,7 @@ struct dml2_core_calcs_mode_support_locals {
 	unsigned int meta_row_height_luma[DML2_MAX_PLANES];
 	unsigned int meta_row_height_chroma[DML2_MAX_PLANES];
 
-	bool dummy_boolean[2];
+	bool dummy_boolean[3];
 	unsigned int dummy_integer[3];
 	unsigned int dummy_integer_array[36][DML2_MAX_PLANES];
 	enum dml2_odm_mode dummy_odm_mode[DML2_MAX_PLANES];