arm/fdt/cpu_fdt.c: Use `cpu' iattr to attach cpufreq. Now that cpu has an explicit interface attribute, cpufeaturebus, _all_ children of cpu must use an explicit interface attribute to disambiguate. For children that weren't previously attached using an explicit interface attribute, the name of the parent, `cpu', serves as the iattr. XXX I think we should either (a) not use cpufreqbus, since in the aarch64 case it doesn't seem to be passing any information through attach args, or (b) create another iattr like cpufdtbus for use by cpufreq_dt.c, which does rely on attach args, if it has to attach differently from the rest of fdtbus. But for now this should get aarch64 on fdt booting again.

(riastradh)

@@ -1,4 +1,4 @@
-/* $NetBSD: cpu_fdt.c,v 1.43 2024/05/09 12:41:08 pho Exp $ */
+/* $NetBSD: cpu_fdt.c,v 1.44 2024/05/10 14:42:21 riastradh Exp $ */
 
 /*-
  * Copyright (c) 2017 Jared McNeill <jmcneill@invisible.ca>
@@ -30,7 +30,7 @@
 #include "psci_fdt.h"
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: cpu_fdt.c,v 1.43 2024/05/09 12:41:08 pho Exp $");
+__KERNEL_RCSID(0, "$NetBSD: cpu_fdt.c,v 1.44 2024/05/10 14:42:21 riastradh Exp $");
 
 #include <sys/param.h>
 #include <sys/atomic.h>
@@ -98,7 +98,7 @@
 	cpu_attach(self, cpuid);
 
 	/* Attach CPU frequency scaling provider */
-	config_found(self, faa, NULL, CFARGS_NONE);
+	config_found(self, faa, NULL, CFARGS(.iattr = "cpu"));
 }
 
 #if defined(MULTIPROCESSOR) && (NPSCI_FDT > 0 || defined(__aarch64__))