bfsbverify: fix bogus logic 'compare_rotpk_mfg' function
bfsbverify: fix bogus logic 'compare_rotpk_mfg' function

In BlueField-3 there are 4 pregeneratd ROTPK; so far only one
key is used for signing. When calling 'bfsbverify' to verify
the ROTPK of version 2 (BlueField-3) binaries, 'compare_rotpk_mfg'
returns when comparing the input key to the second ROTPK key
which is expected. Indeed, the first comparison succeeded as the
input key matches the first ROTPK. But this is not true for the
remaining ROTPKs. Thus update the logic to return as soon as
matching key is found.

Also update the short options configuration when parsing the
script arguments.

Mellanox/bfscripts,Mellanox/bfscripts