sf: Correct the macros as per new array fast read command

Correct the macros as per insertion of array fast read
command CMD_READ_ARRAY_FAST in spi_read_cmds_array in file
sf_probe.c

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