rename EB+MCF-EV123 to its current marketing name EB+CPU5282

* rename board directory to eb_cpu5282
* rename EB+MCF-EV123_.*config to eb_cpu5282_.*config
* add Maintainer for EB+CPU5282 board
* rename prompt

Signed-off-by: Jens Scharsig (BuS Elektronik) <esw@bus-elektronik.de>
diff --git a/MAINTAINERS b/MAINTAINERS
index c8d66b8..c5a6f2f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1052,6 +1052,10 @@
 
 	TASREG		MCF5249
 
+Jens Scharsig <esw@bus-elektronik.de>
+
+	eb_cpu5282	mfc5282
+
 TsiChung Liew <Tsi-Chung.Liew@freescale.com>
 
 	M52277EVB	mcf5227x