staging: crypto: skein: rename camelcase vars

camelCase is not accepted in the Linux Kernel. To prepare skein
driver for mainline inclusion, we rename all vars to
non-camelCase equivalents.

Signed-off-by: Anton Saraev <antonysaraev@gmail.com>
Reviewed-by: Jake Edge <jake@lwn.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>