staging: cxd2099: Change kzalloc parameter

Changed the structure tag 'struct cxd' with the variable '*ci' to fix the
following checkpath.pl issue: CHECK: Prefer kzalloc(sizeof(*ci)...) over
kzalloc(sizeof(struct cxd)).
Signed-off-by: Tamara Diaconita <diaconita.tamara@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/media/cxd2099/cxd2099.c

@@ -693,7 +693,7 @@ struct dvb_ca_en50221 *cxd2099_attach(struct cxd2099_cfg *cfg,
 		return NULL;
 	}
 
-	ci = kzalloc(sizeof(struct cxd), GFP_KERNEL);
+	ci = kzalloc(sizeof(*ci), GFP_KERNEL);
 	if (!ci)
 		return NULL;