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/mpc8360emds/mpc8360emds.c b/board/mpc8360emds/mpc8360emds.c
index d6d0f4e..0751c6f 100644
--- a/board/mpc8360emds/mpc8360emds.c
+++ b/board/mpc8360emds/mpc8360emds.c
@@ -149,7 +149,7 @@
 	 * Initialize SDRAM if it is on local bus.
 	 */
 	sdram_init();
-	puts("   DDR RAM: ");
+
 	/* return total bus SDRAM size(bytes)  -- DDR */
 	return (msize * 1024 * 1024);
 }
@@ -234,8 +234,6 @@
 	volatile lbus83xx_t *lbc = &immap->lbus;
 	uint *sdram_addr = (uint *) CFG_LBC_SDRAM_BASE;
 
-	puts("\n   SDRAM on Local Bus: ");
-	print_size(CFG_LBC_SDRAM_SIZE * 1024 * 1024, "\n");
 	/*
 	 * Setup SDRAM Base and Option Registers, already done in cpu_init.c
 	 */
@@ -291,7 +289,6 @@
 #else
 void sdram_init(void)
 {
-	puts("SDRAM on Local Bus is NOT available!\n");
 }
 #endif