Fix new found CFG_

Also fix some minor typos.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/board/esd/pmc440/cmd_pmc440.c b/board/esd/pmc440/cmd_pmc440.c
index 3f0dca0..16c9c7e 100644
--- a/board/esd/pmc440/cmd_pmc440.c
+++ b/board/esd/pmc440/cmd_pmc440.c
@@ -364,7 +364,7 @@
 	base -= LOGBUFF_LEN + LOGBUFF_OVERHEAD;
 #endif
 	/*
-	 * gd->bd->bi_memsize == physical ram size - CFG_MEM_TOP_HIDE
+	 * gd->bd->bi_memsize == physical ram size - CONFIG_SYS_MEM_TOP_HIDE
 	 */
 	param = base - (pram << 10);
 	printf("PARAM: @%08x\n", param);