[X86_64] Increase the number of supported CPUs to 2048

We need more cpus

Signed-off-by: Keith <kxr@sgi.com>

Index: linux-2.6/arch/x86_64/Kconfig
===================================================================
--- linux-2.6.orig/arch/x86_64/Kconfig	2007-07-31 14:05:08.000000000 -0700
+++ linux-2.6/arch/x86_64/Kconfig	2007-07-31 14:05:25.000000000 -0700
@@ -427,8 +427,8 @@ config OUT_OF_LINE_PFN_TO_PAGE
 	depends on DISCONTIGMEM
 
 config NR_CPUS
-	int "Maximum number of CPUs (2-255)"
-	range 2 255
+	int "Maximum number of CPUs (2-2048)"
+	range 2 2048
 	depends on SMP
 	default "8"
 	help