crypto: qat - fix initialization of pfvf rts_map_msg structures

Initialize fully the structures rts_map_msg containing the ring to
service map from the host.

This is to fix the following warning when compiling the QAT driver
using the clang compiler with CC=clang W=2:

    drivers/crypto/qat/qat_common/adf_pfvf_vf_msg.c:144:51: warning: missing field 'map' initializer [-Wmissing-field-initializers]
            struct ring_to_svc_map_v1 rts_map_msg = { { 0 }, };
                                                             ^
Fixes: e1b176af ("crypto: qat - exchange ring-to-service mappings over PFVF")
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/qat/qat_common/adf_pfvf_vf_msg.c

@@ -141,7 +141,7 @@ int adf_vf2pf_get_capabilities(struct adf_accel_dev *accel_dev)
 
 int adf_vf2pf_get_ring_to_svc(struct adf_accel_dev *accel_dev)
 {
-	struct ring_to_svc_map_v1 rts_map_msg = { { 0 }, };
+	struct ring_to_svc_map_v1 rts_map_msg = { 0 };
 	unsigned int len = sizeof(rts_map_msg);
 
 	if (accel_dev->vf.pf_compat_ver < ADF_PFVF_COMPAT_RING_TO_SVC_MAP)