uboot-phytec

sf: Poll both the read status and flag status

Poll both the Read status and Flag status registers
for sucessful erase and program operations for the
Micron devices with E_FSR flag set in params table.

Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>