mpc832x: add support for mpc8321 based tuxa1 board

This board is similar to suvd3 board. So most initialisation topics
are taken from suvd3 (UART1, Ethernet, piggy PHY, flash, ram) only the
application specific chip selects differ.

Signed-off-by: Lukas Roggli <lukas.roggli@keymile.com>
Signed-off-by: Holger Brunck <holger.brunck@keymile.com>
Signed-off-by: Heiko Schocher <hs@denx.de>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
cc: Kim Phillips <kim.phillips@freescale.com>
cc: Valentin Longchamp <valentin.longchamp@keymile.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 179b78d..d837af4 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -434,6 +434,7 @@
 	sc3		PPC405GP
 	suen3		ARM926EJS (Kirkwood SoC)
 	suvd3		MPC8321
+	tuxa1		MPC8321
 	uc101		MPC5200
 	ve8313		MPC8313