wireless-regb: make db2bin.py use new hashlib for sha1
wireless-regb: make db2bin.py use new hashlib for sha1

Python now complains about sha module as its deprecated:

./db2bin.py regulatory.bin db.txt ~/.wireless-regdb-mcgrof.key.priv.pem
./db2bin.py:5: DeprecationWarning: the sha module is deprecated; use the hashlib module instead
  import sha

Signed-off-by: Luis R. Rodriguez <79e6b8107a8aa3944e09fad43634662ac3b91a0b@atheros.com>
Signed-off-by: John W. Linville <2a53bac7a5d324865ef46ec4c38b2c0fba1456b4@tuxdriver.com>

Distrotech/wireless-regdb,CTU-IIG/802.11p-wireless-regdb,vaginessa/wireless-regdb,0x90/wireless-regdb,perillamint/wireless-regdb-hx