board_f: Drop return value from initdram()

At present we cannot use this function as an init sequence call without a
wrapper, since it returns the RAM size. Adjust it to set the RAM size in
global_data instead, and return 0 on success.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/board/inka4x0/inka4x0.c b/board/inka4x0/inka4x0.c
index 47c3955..2dd9799 100644
--- a/board/inka4x0/inka4x0.c
+++ b/board/inka4x0/inka4x0.c
@@ -36,6 +36,8 @@
 #error "INKA4x0 SDRAM: invalid chip type specified!"
 #endif
 
+DECLARE_GLOBAL_DATA_PTR;
+
 #ifndef CONFIG_SYS_RAMBOOT
 static void sdram_start (int hi_addr)
 {
@@ -77,7 +79,7 @@
  *	      is something else than 0x00000000.
  */
 
-phys_size_t initdram(void)
+int initdram(void)
 {
 	volatile struct mpc5xxx_mmap_ctl *mm =
 		(struct mpc5xxx_mmap_ctl *) CONFIG_SYS_MBAR;
@@ -139,7 +141,9 @@
 	}
 #endif /* CONFIG_SYS_RAMBOOT */
 
-	return dramsize;
+	gd->ram_size = dramsize;
+
+	return 0;
 }
 
 int checkboard (void)