platform: mellanox: mlx-platform: Add support DGX flavor of next-generation 800GB/s ethernet switch.

This system is based on Nvidia SN5600 Spectrum-4 Based 64x800Gb/s ETH
Switch System, with the following key changes:

Key changes:
  1. New system SKU: HI174.
  2. Power Supply: PSU AC replaiced with PDB board (added pdb/pwr
     attributes).
  3. CPLD: Update register map with new PDB related signals.

Signed-off-by: Oleksandr Shamray <oleksandrs@nvidia.com>
Reviewed-by: Vadim Pasternak <vadimp@nvidia.com>
Link: https://patch.msgid.link/20260128075939.2704019-3-oleksandrs@nvidia.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

Author: sholeksandr

drivers/platform/mellanox/mlx-platform.c

@@ -7772,6 +7772,27 @@ static int __init mlxplat_dmi_ng800_matched(const struct dmi_system_id *dmi)
 	return mlxplat_register_platform_device();
 }
 
+static int __init mlxplat_dmi_ng800_dgx_matched(const struct dmi_system_id *dmi)
+{
+	int i;
+
+	mlxplat_max_adap_num = MLXPLAT_CPLD_MAX_PHYS_ADAPTER_NUM;
+	mlxplat_mux_num = ARRAY_SIZE(mlxplat_ng800_mux_data);
+	mlxplat_mux_data = mlxplat_ng800_mux_data;
+	mlxplat_hotplug = &mlxplat_mlxcpld_dgx_ext_data;
+	mlxplat_hotplug->deferred_nr =
+		mlxplat_msn21xx_channels[MLXPLAT_CPLD_GRP_CHNL_NUM - 1];
+	mlxplat_led = &mlxplat_default_ng_led_data;
+	mlxplat_regs_io = &mlxplat_dgx_ng_regs_io_data;
+	mlxplat_fan = &mlxplat_default_fan_data;
+	for (i = 0; i < ARRAY_SIZE(mlxplat_mlxcpld_wd_set_type2); i++)
+		mlxplat_wd_data[i] = &mlxplat_mlxcpld_wd_set_type2[i];
+	mlxplat_i2c = &mlxplat_mlxcpld_i2c_ng_data;
+	mlxplat_regmap_config = &mlxplat_mlxcpld_regmap_config_ng400;
+
+	return mlxplat_register_platform_device();
+}
+
 static int __init mlxplat_dmi_l1_switch_matched(const struct dmi_system_id *dmi)
 {
 	int i;
@@ -7926,6 +7947,13 @@ static const struct dmi_system_id mlxplat_dmi_table[] __initconst = {
 			DMI_MATCH(DMI_BOARD_NAME, "VMOD0011"),
 		},
 	},
+	{
+		.callback = mlxplat_dmi_ng800_dgx_matched,
+		.matches = {
+			DMI_MATCH(DMI_BOARD_NAME, "VMOD0013"),
+			DMI_EXACT_MATCH(DMI_PRODUCT_SKU, "HI174"),
+		},
+	},
 	{
 		.callback = mlxplat_dmi_ng800_matched,
 		.matches = {