[POWERPC] 4xx: Create common ppc4xx_reset_system() in ppc4xx_soc.c

This patch creates a common system reset routine for all 40x and 44x
systems. Previously only a 44x routine existed. But since this system
reset via the debug control register is common for 40x and 44x let's
share this code for all those platforms in ppc4xx_soc.c.

This patch also enables CONFIG_4xx_SOC for all 40x and 44x platforms.

Tested on Kilauea (405EX) and Canyonlands (440EX).

Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
diff --git a/arch/powerpc/platforms/44x/warp.c b/arch/powerpc/platforms/44x/warp.c
index da5b7b7..39cf615 100644
--- a/arch/powerpc/platforms/44x/warp.c
+++ b/arch/powerpc/platforms/44x/warp.c
@@ -18,9 +18,7 @@
 #include <asm/udbg.h>
 #include <asm/time.h>
 #include <asm/uic.h>
-
-#include "44x.h"
-
+#include <asm/ppc4xx.h>
 
 static __initdata struct of_device_id warp_of_bus[] = {
 	{ .compatible = "ibm,plb4", },
@@ -49,7 +47,7 @@
 	.progress 	= udbg_progress,
 	.init_IRQ 	= uic_init_tree,
 	.get_irq 	= uic_get_irq,
-	.restart	= ppc44x_reset_system,
+	.restart	= ppc4xx_reset_system,
 	.calibrate_decr = generic_calibrate_decr,
 };