Add common 'enter configuration mode' function for most Winbond/Fintek/ITE
chips which use the 0x87 0x87 sequence for that reason.
Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2794 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1