TQM8548: Basic support for the TQM8548 modules

This patch adds basic support for the TQM8548 module from TQ-Components
(http://www.tqc.de/) including DDR2 SDRAM initialisation and support for
eTSEC 3 and 4

Furthermore Flash buffer write has been enabled to speed up output to
the Flash by approx. a factor of 10.

Signed-off-by: Thomas Waehner <thomas.waehner@tqs.de>
Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
diff --git a/MAKEALL b/MAKEALL
index 3cb1d24..8fb1e86 100755
--- a/MAKEALL
+++ b/MAKEALL
@@ -360,6 +360,7 @@
 	stxssa		\
 	TQM8540		\
 	TQM8541		\
+	TQM8548		\
 	TQM8555		\
 	TQM8560		\
 "