drm/amd/display: [FW Promotion] Release 0.0.150.0

- Add comments to reserved bit

Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Alan Liu <HaoPing.Liu@amd.com>
Signed-off-by: Anthony Koo <Anthony.Koo@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h

@@ -3112,7 +3112,7 @@ struct dmub_rb_cmd_panel_cntl {
 struct dmub_cmd_lvtma_control_data {
 	uint8_t uc_pwr_action; /**< LVTMA_ACTION */
 	uint8_t bypass_panel_control_wait;
-	uint8_t reserved_0[2];
+	uint8_t reserved_0[2]; /**< For future use */
 	uint8_t panel_inst; /**< LVTMA control instance */
 	uint8_t reserved_1[3]; /**< For future use */
 };