nhk8815: add support for relocation

This patch defines all the needed symbols in the header file
and removes the now-unused config.mk in board directory.
Changes to board C file as requested.

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>
Signed-off-by: Alessandro Rubini <rubini@unipv.it>
Acked-by: Andrea Gallo <andrea.gallo@stericsson.com>
diff --git a/board/st/nhk8815/nhk8815.c b/board/st/nhk8815/nhk8815.c
index faef810..9b62011 100644
--- a/board/st/nhk8815/nhk8815.c
+++ b/board/st/nhk8815/nhk8815.c
@@ -82,13 +82,18 @@
 
 int dram_init(void)
 {
-	/* set dram bank start addr and size */
+	gd->ram_size = get_ram_size(CONFIG_SYS_SDRAM_BASE,
+				    CONFIG_SYS_SDRAM_SIZE);
+	return 0;
+}
+
+void dram_init_banksize(void)
+{
 	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
 	gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
 
 	gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
 	gd->bd->bi_dram[1].size = PHYS_SDRAM_2_SIZE;
-	return 0;
 }
 
 #ifdef CONFIG_CMD_NET