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There are 2 different chips (w25q256fv and w25q256jv) that share
the same JEDEC ID. Only w25q256jv fully supports 4-byte opcodes.
Use SFDP header version to differentiate between them.

Fixes broken reboot on 8devices Habanero since f0f35fda

Signed-off-by: Mantas Pucka <mantas@8devices.com>