Modify aai to support pass-1 device initialization

The Soft Channel device support requests pass-1 initialization.
It no longer needs to initialize the INP link or allocate the
array buffer itself, these are taken care of elsewhere.

The record code uses PACT to remember that the device must be
initialized again in pass 1.

modules/database/src/std/dev/devAaiSoft.c

@@ -47,19 +47,15 @@ static long init_record(dbCommon *pcommon)
     aaiRecord *prec = (aaiRecord *)pcommon;
     DBLINK *plink = &prec->inp;
 
-    /* This is pass 0, link hasn't been initialized yet */
-    dbInitLink(plink, DBF_INLINK);
+    /* Ask record to call us in pass 1 instead */
+    if (prec->pact != 2) {
+        return 2;
+    }
 
     if (dbLinkIsConstant(plink)) {
         long nRequest = prec->nelm;
         long status;
 
-        /* Allocate a buffer, record support hasn't done that yet */
-        if (!prec->bptr) {
-            prec->bptr = callocMustSucceed(nRequest, dbValueSize(prec->ftvl),
-                "devAaiSoft: buffer calloc failed");
-        }
-
         status = dbLoadLinkArray(plink, prec->ftvl, prec->bptr, &nRequest);
         if (!status) {
             prec->nord = nRequest;