Move all IT87xx specific SPI routines from spi.c to a separate file it87spi.c

No behavioural changes, but greatly improved SPI abstraction.

Corresponding to flashrom svn r229 and coreboot v2 svn r3305.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Peter Stuge <peter@stuge.se>
4 files changed