crypto: prefix module autoloading with "crypto-"

This prefixes all crypto module loading with "crypto-" so we never run
the risk of exposing module auto-loading to userspace via a crypto API,
as demonstrated by Mathias Krause:

https://lkml.org/lkml/2013/3/4/70

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
static void salsa20_ivsetup(struct salsa20_ctx *ctx, const u8 *iv)
{
	ctx->input[6] = U8TO32_LITTLE(iv + 0);
	ctx->input[7] = U8TO32_LITTLE(iv + 4);
	ctx->input[8] = 0;
	ctx->input[9] = 0;
}

static void salsa20_ivsetup(struct salsa20_ctx *ctx, const u8 *iv)
{
	ctx->input[6] = U8TO32_LITTLE(iv + 0);
	ctx->input[7] = U8TO32_LITTLE(iv + 4);
	ctx->input[8] = 0;
	ctx->input[9] = 0;
}
