drm/amd/display: Some more warning fixes

This doesn't show with gcc6

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/core/dc_link.c

@@ -928,7 +928,7 @@ static bool construct(
 {
 	uint8_t i;
 	struct gpio *hpd_gpio = NULL;
-	struct ddc_service_init_data ddc_service_init_data = { 0 };
+	struct ddc_service_init_data ddc_service_init_data = { { 0 } };
 	struct dc_context *dc_ctx = init_params->ctx;
 	struct encoder_init_data enc_init_data = { 0 };
 	struct integrated_info info = {{{ 0 }}};

drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c

@@ -1762,7 +1762,7 @@ bool dc_link_handle_hpd_rx_irq(const struct dc_link *dc_link)
 {
 	struct core_link *link = DC_LINK_TO_LINK(dc_link);
 	union hpd_irq_data hpd_irq_dpcd_data = {{{{0}}}};
-	union device_service_irq device_service_clear = {0};
+	union device_service_irq device_service_clear = { { 0 } };
 	enum dc_status result = DDC_RESULT_UNKNOWN;
 	bool status = false;
 	/* For use cases related to down stream connection status change,

drivers/gpu/drm/amd/display/dc/dce/dce_clocks.c

@@ -393,8 +393,8 @@ static void dce_clock_read_integrated_info(struct dce_disp_clk *clk_dce)
 {
 	struct dc_debug *debug = &clk_dce->base.ctx->dc->debug;
 	struct dc_bios *bp = clk_dce->base.ctx->dc_bios;
-	struct integrated_info info = { 0 };
-	struct firmware_info fw_info = { 0 };
+	struct integrated_info info = { { { 0 } } };
+	struct firmware_info fw_info = { { 0 } };
 	int i;
 
 	if (bp->integrated_info)
@@ -456,7 +456,7 @@ static void dce_clock_read_ss_info(struct dce_disp_clk *clk_dce)
 			bp, AS_SIGNAL_TYPE_GPU_PLL);
 
 	if (ss_info_num) {
-		struct spread_spectrum_info info = { 0 };
+		struct spread_spectrum_info info = { { 0 } };
 		enum bp_result result = bp->funcs->get_spread_spectrum_info(
 				bp, AS_SIGNAL_TYPE_GPU_PLL, 0, &info);