Add Intel Gigabit NIC SPI flashing support.
Tested on a 82541PI (0x8086, 0x107c) using 32-bit hardware.

The last line in nicintel_request_spibus() could be changed so that FL_BUSY is used instead.

Signed-off-by: Idwer Vollering <vidwer@gmail.com>

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flashrom v0.9.2-r1138 on Linux 2.6.34-ARCH (i686), built with libpci 3.1.7, GCC 4.5.1, little endian
flashrom is free software, get the source code at http://www.flashrom.org

Calibrating delay loop... delay loop is unreliable, trying to continue OK.
Found "Intel Corporation 82541PI Gigabit Ethernet Controller" (8086:107c, BDF 01:03.0).
Found chip "ST M25P05.RES" (64 KB, SPI) at physical address 0xffff0000.
Found chip "ST M25P10.RES" (128 KB, SPI) at physical address 0xfffe0000.
Multiple flash chips were detected: M25P05.RES M25P10.RES
Please specify which chip to use with the -c <chipname> option.



flashrom v0.9.2-r1138 on Linux 2.6.34-ARCH (i686), built with libpci 3.1.7, GCC 4.5.1, little endian
flashrom is free software, get the source code at http://www.flashrom.org

Calibrating delay loop... OK.
Found "Intel Corporation 82541PI Gigabit Ethernet Controller" (8086:107c, BDF 01:03.0).
Found chip "ST M25P10.RES" (128 KB, SPI) at physical address 0xfffe0000.
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This flash part has status UNTESTED for operations: PROBE READ ERASE WRITE
The test status of this chip may have been updated in the latest development
version of flashrom. If you are running the latest development version,
please email a report to flashrom@flashrom.org if any of the above operations
work correctly for you with this flash part. Please include the flashrom
output with the additional -V option for all operations you tested (-V, -Vr,
-Vw, -VE), and mention which mainboard or programmer you tested.
Thanks for your help!
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No operations were specified.