MPC8xxx: drop redundant boot messages

Current code would print RAM size information like this:

	DRAM:  DDR: 256 MiB (DDR1, 64-bit, CL=2, ECC off)

Turn a number of printf()s into debug() to get rid of the redundant
"DDR: " string like this:

	DRAM:  256 MiB (DDR1, 64-bit, CL=2, ECC off)

Signed-off-by: Wolfgang Denk <wd@denx.de>
Acked-by: York Sun <yorksun@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/board/freescale/p2041rdb/ddr.c b/board/freescale/p2041rdb/ddr.c
index 46de910..e9c699c 100644
--- a/board/freescale/p2041rdb/ddr.c
+++ b/board/freescale/p2041rdb/ddr.c
@@ -110,6 +110,6 @@
 	dram_size = setup_ddr_tlbs(dram_size / 0x100000);
 	dram_size *= 0x100000;
 
-	puts("    DDR: ");
+	debug("    DDR: ");
 	return dram_size;
 }