powerpc/t2080rdb: update ddr to support 1866MT/s

Support SODIMM D3XP12081XL10AA 1866MT/s on T2080RDB.
Enable CONFIG_CMD_MEMTEST as well.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
diff --git a/board/freescale/t208xrdb/ddr.h b/board/freescale/t208xrdb/ddr.h
index b6d4062..08cbb60 100644
--- a/board/freescale/t208xrdb/ddr.h
+++ b/board/freescale/t208xrdb/ddr.h
@@ -32,12 +32,12 @@
 	{2,  1500, 2, 5,     6, 0x07070809, 0x0a0b0b09},
 	{2,  1600, 2, 5,     8, 0x0808070b, 0x0c0d0e0a},
 	{2,  1700, 2, 4,     7, 0x080a0a0c, 0x0c0d0e0a},
-	{2,  1900, 2, 5,     9, 0x0a0b0c0e, 0x0f10120c},
+	{2,  1900, 0, 5,     7, 0x0808080c, 0x0b0c0c09},
 	{1,  1200, 2, 5,     7, 0x0808090a, 0x0b0c0c0a},
 	{1,  1500, 2, 5,     6, 0x07070809, 0x0a0b0b09},
 	{1,  1600, 2, 5,     8, 0x0808070b, 0x0c0d0e0a},
 	{1,  1700, 2, 4,     7, 0x080a0a0c, 0x0c0d0e0a},
-	{1,  1900, 2, 5,     9, 0x0a0b0c0e, 0x0f10120c},
+	{1,  1900, 0, 5,     7, 0x0808080c, 0x0b0c0c09},
 	{}
 };