Faster flashing with SMFI (#32)

* WIP: support for new flashing API

* Add SPI flashing support to tool

* Add timeouts when flashing with ectool

* Test SPI reading

* Use chunks for SPI commands

* Sanity test of flash size

* Read rom in sectors

* Relocate memmap region, remove PMC3

* Use ectool to flash

* Remove debugging of spi command

* Fix flashing over smfi

tool/src/lib.rs

@@ -15,6 +15,9 @@ mod legacy;
 pub use self::pmc::Pmc;
 mod pmc;
 
+pub use self::spi::{Spi, SpiRom};
+mod spi;
+
 pub use self::super_io::SuperIo;
 mod super_io;