RFR[14] 8232950: SUNPKCS11 Provider incorrectly check key length for PSS Signatures.

[Valerie Peng]

Anyone has a minute to review this trivial fix? The supported key size 
info for the PKCS#11 PSS mechanism should be in bits. The current code 
treat them as in bytes. This does not cause any existing regression test 
failure because NSS has a very low value, i.e. 128, as the minimum key 
size.

Bug: https://bugs.openjdk.java.net/browse/JDK-8232950

Webrev: http://cr.openjdk.java.net/~valeriep/8232950/webrev.00/

Mach5 run passed.

Thanks,
Valerie