nodeinfo: Fully convert to new virReportError

With our latest s/[a-z]+ReportError/virReportError/ rewrite
(47ab34e2) we forgot to update arm part of the code.

src/nodeinfo.c

@@ -423,8 +423,8 @@ int linuxNodeInfoCPUPopulate(FILE *cpuinfo,
                 buf++;
 
             if (*buf != ':' || !buf[1]) {
-                nodeReportError(VIR_ERR_INTERNAL_ERROR,
-                                "%s", _("parsing cpu MHz from cpuinfo"));
+                virReportError(VIR_ERR_INTERNAL_ERROR,
+                               "%s", _("parsing cpu MHz from cpuinfo"));
                 goto cleanup;
             }