powerpc: Fix mpc83xx restart bug

We need to write the correct value to the RCR to get a HW reset.
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

arch/powerpc/platforms/83xx/misc.c

@@ -35,7 +35,7 @@ void mpc83xx_restart(char *cmd)
 	out_be32(reg + (RST_PROT_REG >> 2), 0x52535445);
 
 	/* set software hard reset */
-	out_be32(reg + (RST_CTRL_REG >> 2), 0x52535445);
+	out_be32(reg + (RST_CTRL_REG >> 2), 0x2);
 	for (;;) ;
 }