mtd: spi-nor: winbond: Add lock/unlock support for W25Q256JWFIM

commit 3551a16ac2c7dc07f3b3e0f12233622b90e23345 from
https://github.com/Xilinx/linux-xlnx.git

 xlnx_rebase_v6.6

For adding flash lock/unlock support to W25Q256JWFIM flash, update
the flash info structure with appropriate block protection flags.

Signed-off-by: Srikanth Boyapally <srikanth.boyapally@amd.com>
State: pending
Signed-off-by: Quanyang Wang <quanyang.wang@windriver.com>