First Burst support was not properly indicated in NVMe PRLI.

Correct the bit position and the logic to check and set first burst support.
Signed-off-by: NDick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: NJames Smart <james.smart@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>