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/sbc8349/sbc8349.c b/board/sbc8349/sbc8349.c
index 4cd447e..86166ea 100644
--- a/board/sbc8349/sbc8349.c
+++ b/board/sbc8349/sbc8349.c
@@ -64,8 +64,6 @@
 	if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32)im)
 		return -1;
 
-	puts("Initializing\n");
-
 	/* DDR SDRAM - Main SODIMM */
 	im->sysconf.ddrlaw[0].bar = CFG_DDR_BASE & LAWBAR_BAR;
 #if defined(CONFIG_SPD_EEPROM)
@@ -84,7 +82,6 @@
 	 */
 	ddr_enable_ecc(msize * 1024 * 1024);
 #endif
-	puts("   DDR RAM: ");
 	/* return total bus SDRAM size(bytes)  -- DDR */
 	return (msize * 1024 * 1024);
 }
@@ -130,7 +127,7 @@
 #if defined(CONFIG_DDR_2T_TIMING)
 		| SDRAM_CFG_2T_EN
 #endif
-		| 2 << SDRAM_CFG_SDRAM_TYPE_SHIFT;
+		| SDRAM_CFG_SDRAM_TYPE_DDR1;
 #if defined (CONFIG_DDR_32BIT)
 	/* for 32-bit mode burst length is 8 */
 	im->ddr.sdram_cfg |= (SDRAM_CFG_32_BE | SDRAM_CFG_8_BE);