First round of ICH2/ICH2-M cleanups after split from i82801xx.

 - Drop all non-ICH2 "struct pci_driver" entries from all files.

 - Kconfig: Add missing USE_WATCHDOG_ON_BOOT.

 - Drop i82801bx_sata.c and i82801bx_usb_ehci.c, ICH2 doesn't have SATA/EHCI.

 - Simplify lots of code, getting rid of i82801xx remainders.

 - Use u8 et al (instead of uint8_t) in a few more places.

 - Use #defines from header files where possible.

 - Various other fixes and updates.

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@5938 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1