[SCSI] qla2xxx: Correct endianness issue during flash manipulation.

The flash data was incorrectly being converted (cpu_to_le32())
when using the bulk-flash-write mailbox command (ISP25xx and
above).

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>