[PATCH] powerpc: Kill _machine and hard-coded platform numbers

This removes statically assigned platform numbers and reworks the
powerpc platform probe code to use a better mechanism.  With this,
board support files can simply declare a new machine type with a
macro, and implement a probe() function that uses the flattened
device-tree to detect if they apply for a given machine.

We now have a machine_is() macro that replaces the comparisons of
_machine with the various PLATFORM_* constants.  This commit also
changes various drivers to use the new macro instead of looking at
_machine.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/platforms/pseries/reconfig.c

@@ -17,8 +17,9 @@
 #include <linux/proc_fs.h>
 
 #include <asm/prom.h>
-#include <asm/pSeries_reconfig.h>
+#include <asm/machdep.h>
 #include <asm/uaccess.h>
+#include <asm/pSeries_reconfig.h>
 
 
 
@@ -508,7 +509,7 @@ static int proc_ppc64_create_ofdt(void)
 {
 	struct proc_dir_entry *ent;
 
-	if (!platform_is_pseries())
+	if (!machine_is(pseries))
 		return 0;
 
 	ent = create_proc_entry("ppc64/ofdt", S_IWUSR, NULL);