lib: EXPORT_SYMBOL sha_init

We need this symbol later on in ipv6.ko, thus export it via EXPORT_SYMBOL
like sha_transform already is.

Signed-off-by: Hannes Frederic Sowa <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

lib/sha1.c

···
 	buf[3] = 0x10325476;
 	buf[4] = 0xc3d2e1f0;
 }
+EXPORT_SYMBOL(sha_init);