[Midnightbsd-cvs] src: sha2.c: make several items static

[laffer1 at midnightbsd.org]

Log Message:
-----------
make several items static

Modified Files:
--------------
    src/sys/crypto/sha2:
        sha2.c (r1.3 -> r1.4)
        (http://cvsweb.midnightbsd.org/src/sys/crypto/sha2/sha2.c?r1=1.3&r2=1.4)