changed the timeout for grub to load the menu from 10 secs to 2 secs

SVN-Revision: 8815

target/linux/x86/image/grub/menu.lst

@@ -1,5 +1,5 @@
 serial --unit=0 --speed=@BAUDRATE@ --word=8 --parity=no --stop=1
-terminal --timeout=10 console serial
+terminal --timeout=2 console serial
 
 default 0
 timeout 5