Dell Precision WorkStation T7400 freezes on reboot unless reboot=b is used.

Reference: https://qa.mandriva.com/show_bug.cgi?id=58017

Signed-off-by: Thomas Backlund <tmb@mandriva.org>

--- linux-2.6/arch/x86/kernel/reboot.c.orig	2010-05-27 12:39:46.633765379 +0300
+++ linux-2.6/arch/x86/kernel/reboot.c	2010-06-19 15:56:17.250903899 +0300
@@ -228,6 +228,14 @@ static struct dmi_system_id __initdata r
 			DMI_MATCH(DMI_PRODUCT_NAME, "Precision WorkStation T5400"),
 		},
 	},
+	{	/* Handle problems with rebooting on Dell T7400's */
+		.callback = set_bios_reboot,
+		.ident = "Dell Precision T7400",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Precision WorkStation T7400"),
+		},
+	},
 	{	/* Handle problems with rebooting on HP laptops */
 		.callback = set_bios_reboot,
 		.ident = "HP Compaq Laptop",