sf: Preserve QE bit when clearing BP# bits for Macronix flash

On some flash (like Macronix), QE (quad enable) bit is in the same
status register as BP# bits, and we need preserve its original value
during a reboot cycle as this is required by some platforms (like
Intel ICH SPI controller working under descriptor mode).

Signed-off-by: Bin Meng <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Reviewed-by: Jagan Teki <[email protected]>
[Refined code for readability]
Signed-off-by: Jagan Teki <[email protected]>

0 files changed, 0 insertions, 0 deletions