powerpc: Use the poison value of 0xdeadbeef directly in DDR init

On p1_p2_rdb_pc platforms, we set ddr_data_init to the "poison" value of
0xdeadbeef rather than a real calculated / derived value.  Do this
directly and comment rather than via CONFIG.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/board/freescale/corenet_ds/p4080ds_ddr.c b/board/freescale/corenet_ds/p4080ds_ddr.c
index 3469064..9839eac 100644
--- a/board/freescale/corenet_ds/p4080ds_ddr.c
+++ b/board/freescale/corenet_ds/p4080ds_ddr.c
@@ -62,7 +62,6 @@
 #define CONFIG_SYS_DDR_INIT_ADDR	0x00000000
 #define CONFIG_SYS_DDR_INIT_EXT_ADDR	0x00000000
 #define CONFIG_SYS_DDR_CS1_CONFIG	0x80004202
-#define CONFIG_SYS_DDR_DATA_INIT	0xdeadbeef
 #define CONFIG_SYS_DDR_TIMING_4		0x00000001
 #define CONFIG_SYS_DDR_TIMING_5		0x02401400
 #define CONFIG_SYS_DDR_MODE_CONTROL	0x00000000
diff --git a/board/freescale/p1_p2_rdb_pc/ddr.c b/board/freescale/p1_p2_rdb_pc/ddr.c
index be803dd..038e673 100644
--- a/board/freescale/p1_p2_rdb_pc/ddr.c
+++ b/board/freescale/p1_p2_rdb_pc/ddr.c
@@ -227,7 +227,7 @@
 		.ddr_sdram_mode_2 = CONFIG_SYS_DDR_MODE_2,
 		.ddr_sdram_md_cntl = CONFIG_SYS_DDR_MODE_CONTROL,
 		.ddr_sdram_interval = CONFIG_SYS_DDR_INTERVAL,
-		.ddr_data_init = CONFIG_SYS_DDR_DATA_INIT,
+		.ddr_data_init = 0xdeadbeef, /* Poison value */
 		.ddr_sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CTRL,
 		.ddr_init_addr = CONFIG_SYS_DDR_INIT_ADDR,
 		.ddr_init_ext_addr = CONFIG_SYS_DDR_INIT_EXT_ADDR,
diff --git a/include/configs/P1010RDB.h b/include/configs/P1010RDB.h
index d263999..12a78ea 100644
--- a/include/configs/P1010RDB.h
+++ b/include/configs/P1010RDB.h
@@ -118,7 +118,6 @@
 #define CONFIG_SYS_DDR_CS0_BNDS		0x0000003f
 #define CONFIG_SYS_DDR_CS0_CONFIG	0x80014302
 #define CONFIG_SYS_DDR_CS0_CONFIG_2	0x00000000
-#define CONFIG_SYS_DDR_DATA_INIT	0xdeadbeef
 #define CONFIG_SYS_DDR_INIT_ADDR	0x00000000
 #define CONFIG_SYS_DDR_INIT_EXT_ADDR	0x00000000
 #define CONFIG_SYS_DDR_MODE_CONTROL	0x00000000
diff --git a/include/configs/p1_p2_rdb_pc.h b/include/configs/p1_p2_rdb_pc.h
index e921739..a0d5830 100644
--- a/include/configs/p1_p2_rdb_pc.h
+++ b/include/configs/p1_p2_rdb_pc.h
@@ -132,7 +132,6 @@
 #define CONFIG_SYS_DDR_CS1_CONFIG	0x80014302
 #define CONFIG_SYS_DDR_CS1_CONFIG_2	0x00000000
 
-#define CONFIG_SYS_DDR_DATA_INIT	0xdeadbeef
 #define CONFIG_SYS_DDR_INIT_ADDR	0x00000000
 #define CONFIG_SYS_DDR_INIT_EXT_ADDR	0x00000000
 #define CONFIG_SYS_DDR_MODE_CONTROL	0x00000000