crypto: only include tls-cipher-suites in emulators

tls-cipher-suites is an object that is used to inject TLS configuration
into the guest (via fw_cfg).  It is never used for host-side TLS
operation, and therefore it need not be available in the tools.

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/crypto/meson.build b/crypto/meson.build
index 9ac1a89..c46f9c2 100644
--- a/crypto/meson.build
+++ b/crypto/meson.build
@@ -46,7 +46,8 @@
 if have_afalg
   crypto_ss.add(if_true: files('afalg.c', 'cipher-afalg.c', 'hash-afalg.c'))
 endif
-crypto_ss.add(when: gnutls, if_true: files('tls-cipher-suites.c'))
+
+system_ss.add(when: gnutls, if_true: files('tls-cipher-suites.c'))
 
 util_ss.add(files(
   'aes.c',