crypto: acomp - fix dependency in Makefile

Fix dependency between acomp and scomp that appears when acomp is
built as module

Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/Makefile

@@ -50,8 +50,9 @@ rsa_generic-y += rsa_helper.o
 rsa_generic-y += rsa-pkcs1pad.o
 obj-$(CONFIG_CRYPTO_RSA) += rsa_generic.o
 
-obj-$(CONFIG_CRYPTO_ACOMP2) += acompress.o
-obj-$(CONFIG_CRYPTO_ACOMP2) += scompress.o
+crypto_acompress-y := acompress.o
+crypto_acompress-y += scompress.o
+obj-$(CONFIG_CRYPTO_ACOMP2) += crypto_acompress.o
 
 cryptomgr-y := algboss.o testmgr.o