test 58: bug fix: handle BDF return values correctly (#51)
test 58: bug fix: handle BDF return values correctly (#51)

BDF value 0 is valid, and should not be discarded.

Signed-off-by: Sakar Arora <61a4bc7d5b6ebce96a04cb5708f079a0d0b34ee6@arm.com>
anurag-mishra28/sbsa-acs,ARM-software/sbsa-acs,ARM-software/sbsa-acs,anurag-mishra28/sbsa-acs,anurag-mishra28/sbsa-acs