i8k: Add support for Dell Precision 490 and Latitude D520

Both systems need non-standard parameters for fan multiplier
and maximum fan speed.

Signed-off-by: Guenter Roeck <[e-mail]>
Cc: Andreas Mohr <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/char/i8k.c

···
 };
 
 enum i8k_configs {
+	DELL_LATITUDE_D520,
+	DELL_PRECISION_490,
 	DELL_STUDIO,
 	DELL_XPS_M140,
 };
 
 static const struct i8k_config_data i8k_config_data[] = {
+	[DELL_LATITUDE_D520] = {
+		.fan_mult = 1,
+		.fan_max = I8K_FAN_TURBO,
+	},
+	[DELL_PRECISION_490] = {
+		.fan_mult = 1,
+		.fan_max = I8K_FAN_TURBO,
+	},
 	[DELL_STUDIO] = {
 		.fan_mult = 1,
 		.fan_max = I8K_FAN_HIGH,
···
 		},
 	},
 	{
+		.ident = "Dell Latitude D520",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D520"),
+		},
+		.driver_data = (void *)&i8k_config_data[DELL_LATITUDE_D520],
+	},
+	{
 		.ident = "Dell Latitude 2",
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
···
 			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 			DMI_MATCH(DMI_PRODUCT_NAME, "MP061"),
 		},
+	},
+	{
+		.ident = "Dell Precision 490",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME,
+				  "Precision WorkStation 490"),
+		},
+		.driver_data = (void *)&i8k_config_data[DELL_PRECISION_490],
 	},
 	{
 		.ident = "Dell Precision",