crypto: acomp - add support for 842 via scomp

Add scomp backend for 842 compression algorithm.

Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/Kconfig b/crypto/Kconfig
index a1819e7..b0718ce 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1598,6 +1598,7 @@
 config CRYPTO_842
 	tristate "842 compression algorithm"
 	select CRYPTO_ALGAPI
+	select CRYPTO_ACOMP2
 	select 842_COMPRESS
 	select 842_DECOMPRESS
 	help