netspace_v2: fix SDRAM configuration

Network Space (Max) v2 and Internet Space v2 boards have different
SDRAM configuration and size: respectively 256MB (DDR2 1Gb, 128Mbx8
organisation) and 128MB (DDR2 512Mb, 64Mbx8 organisation). To handle
the differences, this patch add a dedicated kwimage.cfg file for
Internet Space v2.

Additionnaly the number of SDRAM banks is fixed.

Signed-off-by: Simon Guinot <simon.guinot@sequanux.org>
diff --git a/board/LaCie/netspace_v2/kwbimage.cfg b/board/LaCie/netspace_v2/kwbimage.cfg
index 361feeb..7e53649 100644
--- a/board/LaCie/netspace_v2/kwbimage.cfg
+++ b/board/LaCie/netspace_v2/kwbimage.cfg
@@ -69,8 +69,8 @@
 # bit12-11: TW2W
 # bit31-13: zero required
 
-DATA 0xFFD01410 0x0000CCCC	#  DDR Address Control
-# bit1-0:   01, Cs0width=x16
+DATA 0xFFD01410 0x0000000C	#  DDR Address Control
+# bit1-0:   00, Cs0width=x8
 # bit3-2:   11, Cs0size=1Gb
 # bit5-4:   00, Cs2width=nonexistent
 # bit7-6:   00, Cs1size =nonexistent