The function sas_parse_addr() could be easily substituted by hex2bin()
which is in kernel library code.

Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: NXiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>