Attention is currently required from: Edward O'Callaghan, Eric Lai, Nikolai Artemiev.

Nikolai Artemiev uploaded patch set #3 to this change.

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flashchips.c: remove WREN from GD25Q256D enter 4BA sequence

As noted in a comment on
`commit 86fc9cf7ab221bc54ef6f10252e296fc2d7a22d2`, the GD25Q256D
datasheet indicates that the chip does not require a WREN command to
enter 4BA mode.

Testing has confirmed that a WREN command is not required, so change the
flashchip feature flags from FEATURE_4BA_WREN to FEATURE_4BA.

Ticket: https://ticket.coreboot.org/issues/356

BUG=none
BRANCH=none
TEST=read/write/erase/verify GD25Q256D flash with FT2232H programmer
TEST=called spi_enter_exit_4ba(true), dumped registers, checked ADS=1.

Change-Id: I96e48933f33c52c0d10a0d4cb7f7e07c1fceab99
Signed-off-by: Nikolai Artemiev <nartemiev@google.com>
---
M flashchips.c
1 file changed, 26 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/42/70342/3

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