mpc83xx: implement board_add_ram_info

add board_add_ram_info, to make memory diagnostic output more
consistent. u-boot banner output now looks like:

DRAM:  256 MB (DDR1, 64-bit, ECC on)

and for boards with SDRAM on the local bus, a line such as this is
added:

SDRAM: 64 MB (local bus)

also replaced some magic numbers with their equivalent define names.

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
diff --git a/board/mpc8349itx/mpc8349itx.c b/board/mpc8349itx/mpc8349itx.c
index 125e6c0..c82f784 100644
--- a/board/mpc8349itx/mpc8349itx.c
+++ b/board/mpc8349itx/mpc8349itx.c
@@ -76,7 +76,7 @@
 
 	im->ddr.timing_cfg_1 = CFG_DDR_TIMING_1;
 	im->ddr.timing_cfg_2 = CFG_DDR_TIMING_2;/* Was "2 << TIMING_CFG2_WR_DATA_DELAY_SHIFT" */
-	im->ddr.sdram_cfg = SDRAM_CFG_SREN | SDRAM_CFG_SDRAM_TYPE_DDR;
+	im->ddr.sdram_cfg = SDRAM_CFG_SREN | SDRAM_CFG_SDRAM_TYPE_DDR1;
 	im->ddr.sdram_mode =
 	    (0x0000 << SDRAM_MODE_ESD_SHIFT) | (0x0032 << SDRAM_MODE_SD_SHIFT);
 	im->ddr.sdram_interval =
@@ -162,7 +162,6 @@
 		ddr_enable_ecc(msize * 1048576);
 #endif
 
-	puts("   DDR RAM: ");
 	/* return total bus RAM size(bytes) */
 	return msize * 1024 * 1024;
 }