86xx: Reset update

Update the 86xx reset sequence to try executing a board-specific reset
function.  If the board-specific reset is not implemented or does not
succeed, then assert #HRESET_REQ.  Using #HRESET_REQ is a more standard
reset procedure than the previous method and allows all board
peripherals to be reset if needed.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
diff --git a/board/freescale/mpc8610hpcd/mpc8610hpcd.c b/board/freescale/mpc8610hpcd/mpc8610hpcd.c
index a2097a5..b419dcc 100644
--- a/board/freescale/mpc8610hpcd/mpc8610hpcd.c
+++ b/board/freescale/mpc8610hpcd/mpc8610hpcd.c
@@ -484,3 +484,11 @@
 {
 	return pci_eth_init(bis);
 }
+
+void board_reset(void)
+{
+	out8(PIXIS_BASE + PIXIS_RST, 0);
+
+	while (1)
+		;
+}