powerpc/83xx/km: merge tuxa and tuda1 boards to tuxx1

These boards are from a u-boot point of view identical. So collect
the two headerfiles to one, to decrease maintenance.

Signed-off-by: Holger Brunck <holger.brunck@keymile.com>
cc: Valentin Longchamp <valentin.longchamp@keymile.com>
cc: Heiko Schocher <hs@denx.de>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 4bf12b5..5cb70b0 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -436,11 +436,12 @@
 	municse		MPC5200
 	sc3		PPC405GP
 	suvd3		MPC8321
-	tuda1		MPC8321
-	tuxa1		MPC8321
 	uc101		MPC5200
 	ve8313		MPC8313
 
+Holger Brunck <holger.brunck@keymile.com>
+	tuxx1		MPC8321
+
 Peter De Schrijver <p2@mind.be>
 
 	ML2		PPC4xx