Fix the mask and sign extension for bl instruction which branch backwards. When printing the address, address has already been added according to AA.
Fix the mask and sign extension for bl instruction which branch backwards.
When printing the address, address has already been added according to AA.

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars