util/amdfwtool: Fix EFS generation polarity

The DWORD used to indicate the Embedded Firmware Structure's generation
uses 1 to indicate a first-gen structure, e.g. a SPI device's erased
value of 0xffffffff.  A 0 in bit 0 is how Client PSPs will interpret
the structure as designed for second-gen.

This change and the original addition should have no effects on
any current products as none interpret offset 0x24.

BUG=b:158755102
TEST=inspect EFS in coreboot.rom

Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Change-Id: If391f356a1811ed04acdfe9ab9de2e146f6ef5fd
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47769
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>

0 files changed, 0 insertions, 0 deletions