python-pylibftdi: check hash

Currently the hash is not checked, returning this message:
WARNING: no hash file for pylibftdi-0.15.0.tar.gz

Rename the .hash file to use the package name.

Signed-off-by: Ricardo Martincoski <ricardo.martincoski@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>