add a kernel config option for magic sysrq

SVN-Revision: 26214

Config.in

@@ -227,6 +227,10 @@ menu "Global build settings"
 		bool "Compile the kernel with asynchronous IO support"
 		default n
 
+	config KERNEL_MAGIC_SYSRQ
+		bool "Compile the kernel with SysRq support"
+		default n
+
 	comment "Package build options"
 
 	config DEBUG