(5/6) bcm57xx: bcm4785 incomplete reboot

I noticed my wrt350n would not reliably reboot after entering
the reboot command.  I found this code in the source for the
wrt600n.  It corrects the problem, and the wrt350n reboots
reliably now.

Signed-off-by: Ben Pfountz <netprince (at) vt (dot) edu>

SVN-Revision: 11470

target/linux/brcm-2.4/files/arch/mips/bcm947xx/setup.c

@@ -49,6 +49,7 @@
 #include <osl.h>
 #include <sbutils.h>
 #include <bcmnvram.h>
+#include <bcmdevs.h>
 #include <sbhndmips.h>
 #include <hndmips.h>
 #include <trxhdr.h>
@@ -89,9 +90,21 @@ bcm947xx_machine_restart(char *command)
 {
 	printk("Please stand by while rebooting the system...\n");
 
+	if (sb_chip(sbh) == BCM4785_CHIP_ID)
+		MTC0(C0_BROADCOM, 4, (1 << 22));
+
 	/* Set the watchdog timer to reset immediately */
 	__cli();
 	sb_watchdog(sbh, 1);
+
+	if (sb_chip(sbh) == BCM4785_CHIP_ID) {
+		__asm__ __volatile__(
+			".set\tmips3\n\t"
+			"sync\n\t"
+			"wait\n\t"
+			".set\tmips0");
+	}
+
 	while (1);
 }