[flashrom] [PATCH] Fixed unlocking of AT26DF081A

[Mathias Krause]

The AT26DF081A requires the Write Enable Latch (WLE) to be set for
write/erase operations. Also bit 5 is the Erase/Program Error (EPE) bit,
so has nothing to do with the block protection. Ignore it when testing
for block protections.

Signed-off-and-tested-by: Mathias Krause