Use common code for Matrix Vision boards

Clean up existing boards (mvBC-P/MPC5200 and mvBL-M7/MPC8343) by
using common code.

Signed-off-by: André Schwarz <andre.schwarz@matrix-vision.de>
diff --git a/include/configs/MVBC_P.h b/include/configs/MVBC_P.h
index 867e8e0..0c228cb 100644
--- a/include/configs/MVBC_P.h
+++ b/include/configs/MVBC_P.h
@@ -67,7 +67,7 @@
 #define MV_CI			mvBlueCOUGAR-P
 #define MV_VCI			mvBlueCOUGAR-P
 #define MV_FPGA_DATA		0xff860000
-#define MV_FPGA_SIZE		0x0003c886
+#define MV_FPGA_SIZE		0
 #define MV_KERNEL_ADDR		0xffd00000
 #define MV_INITRD_ADDR		0xff900000
 #define MV_INITRD_LENGTH	0x00400000