ARM: owl: Drop custom machine

Rely on the fallback to "Generic DT based system".
This change is visible in /proc/cpuinfo.

Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/mach-actions/Makefile

-obj-y += owl.o
 obj-${CONFIG_SMP} += platsmp.o headsmp.o
 
 AFLAGS_headsmp.o := -Wa,-march=armv7-a

arch/arm/mach-actions/owl.c

-/*
- * Copyright (C) 2017 Andreas Färber
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- */
-
-#include <linux/of_platform.h>
-#include <asm/mach/arch.h>
-
-static const char * const owl_dt_compat[] = {
-	"actions,s500",
-	NULL
-};
-
-DT_MACHINE_START(OWL, "Actions Semi Owl platform")
-	.dt_compat	= owl_dt_compat,
-	.l2c_aux_val	= 0,
-	.l2c_aux_mask	= ~0,
-MACHINE_END