drm/amd/display: Add two dmmuy I2C entry for GPIO port mapping issue

[Why]
When only 4 I2C is declared, two dummies are required to correctly map
GPIO port.

[How]
Add one more I2C dummy entry to match GPIO port.
Signed-off-by: Chris Park <chris.park@amd.com>
Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/gpio/dcn401/hw_factory_dcn401.c

@@ -86,7 +86,13 @@ static const struct ddc_registers ddc_data_regs_dcn[] = {
 	ddc_data_regs_dcn2(2),
 	ddc_data_regs_dcn2(3),
 	ddc_data_regs_dcn2(4),
-//	ddc_data_regs_dcn2(5),
+	{
+		// add a dummy entry for cases no such port
+		{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,},
+		.ddc_setup = 0,
+		.phy_aux_cntl = 0,
+		.dc_gpio_aux_ctrl_5 = 0
+	},
 	{
 		// add a dummy entry for cases no such port
 		{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,},
@@ -107,7 +113,13 @@ static const struct ddc_registers ddc_clk_regs_dcn[] = {
 	ddc_clk_regs_dcn2(2),
 	ddc_clk_regs_dcn2(3),
 	ddc_clk_regs_dcn2(4),
-//	ddc_clk_regs_dcn2(5),
+	{
+		// add a dummy entry for cases no such port
+		{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,},
+		.ddc_setup = 0,
+		.phy_aux_cntl = 0,
+		.dc_gpio_aux_ctrl_5 = 0
+	},
 	{
 		// add a dummy entry for cases no such port
 		{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,},