Add spi_block_erase_62.

This is used by the AT25F series (only?), but is generic enough to reside in spi25.c.
The only currently supported chip is the AT25F512B. Other members of that series
need some additional infrastructure code, hence this patch adds the erase function to
the AT25F512B only.

Signed-off-by: Stefan Tauner <stefan.tauner@student.tuwien.ac.at>
Acked-by: Stefan Tauner <stefan.tauner@student.tuwien.ac.at>

git-svn-id: svn://coreboot.org/flashrom/trunk@1600 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Add a bunch of new/tested stuff and various small changes 14.

Tested Mainboards:
OK:
 - ASUS M3A78-EH
   http://www.flashrom.org/pipermail/flashrom/2010-October/005297.html
 - ASUS P2B-LS
   http://www.flashrom.org/pipermail/flashrom/2010-November/005506.html
 - Biostar TA790GX A3+
   http://paste.flashrom.org/view.php?id=1350
 - ECS 848P-A7
   http://www.flashrom.org/pipermail/flashrom/2011-January/005781.html
 - GIGABYTE GA-G41MT-S2PT
   Reported on IRC
 - GIGABYTE GA-H77-D3H
   Reported and tested by Alexander Gordeev on IRC.
 - Gigabyte GA-X79-UD5
   http://www.flashrom.org/pipermail/flashrom/2012-August/009811.html
 - Shuttle FN78S
   http://www.flashrom.org/pipermail/flashrom/2012-August/009714.html
 - VIA EITX-3000
   Reported on IRC by Tuju

NOT OK:
 - Dell PowerEdge C6220 (0HYFFG)
   http://www.flashrom.org/pipermail/flashrom/2012-September/009900.html
 - Foxconn Q45M
   http://www.flashrom.org/pipermail/flashrom/2012-September/009923.html
 - MSI MS-7309 (K9N6SGM-V)
   http://www.flashrom.org/pipermail/flashrom/2012-August/009712.html
 - Supermicro X9QRi-F+
   http://www.flashrom.org/pipermail/flashrom/2012-September/009887.html
 - ZOTAC H61-ITX WiFi (H61ITX-A-E)
   http://www.flashrom.org/pipermail/flashrom/2012-August/009649.html

ASUS CUSL2-C has been tested to be working with the board enable once
implemented for the TUSL2-C board. They seem to have the same PCI IDs
as shown in the links below. Since only the CUSL2-C board enable has been
tested yet, we distinguish the two by DMI strings.
http://paste.flashrom.org/view.php?id=1393
http://www.flashrom.org/pipermail/flashrom/attachments/20091206/ddca2c6c/attachment-0002.eml

Tested flash chips:
 - Set EMST F25L008A to PREW (+PREW)
   http://www.flashrom.org/pipermail/flashrom/2012-August/009714.html
 - Set GigaDevice GD25Q64 to PREW (+PREW)
   http://git.chromium.org/gitweb/?p=chromiumos/third_party/flashrom.git;a=commit;h=9e8ef49b1f626c2197e131fba6c5b65c8af4eeea
 - Set Macronix MX25L12805 to P (+P)
   http://www.flashrom.org/pipermail/flashrom/2012-September/009887.html
 - Set SST SST49LF003A/B to PREW (+EW)
   http://paste.flashrom.org/view.php?id=467
 - Set Winbond W49V002FA to PREW (+EW)
   http://www.flashrom.org/pipermail/flashrom/2011-January/005781.html

Tested chipsets:
 - Intel X79 (0x1d41)
   http://www.flashrom.org/pipermail/flashrom/2012-August/009811.html

Board enables:
 - add ASUS P4P800-X
   Created by Idwer Vollering and tested by Mingsen Bao:
   http://paste.flashrom.org/view.php?id=467
 - add DMI string to P4P800-VM

Miscellaneous:
 - Add remaining Intel 7 series chipset (LPC) PCI IDs
 - Add generic SPI detection for chips from Winbond
 - Minor manpage changes
 - Minor other cleanups
 - Escape full stops after abbreviations in the manpage.
 - Add ICH9 and successors to spi_get_valid_read_addr

Signed-off-by: Stefan Tauner <stefan.tauner@student.tuwien.ac.at>
Acked-by: Stefan Tauner <stefan.tauner@student.tuwien.ac.at>

git-svn-id: svn://coreboot.org/flashrom/trunk@1601 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1