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/munices/munices.c b/board/munices/munices.c
index b88160c..8f1a5a8 100644
--- a/board/munices/munices.c
+++ b/board/munices/munices.c
@@ -11,6 +11,8 @@
 
 #include "mt48lc16m16a2-75.h"
 
+DECLARE_GLOBAL_DATA_PTR;
+
 #ifndef CONFIG_SYS_RAMBOOT
 static void sdram_start (int hi_addr)
 {
@@ -58,7 +60,7 @@
  *            is something else than 0x00000000.
  */
 
-phys_size_t initdram(void)
+int initdram(void)
 {
 	ulong dramsize = 0;
 	ulong dramsize2 = 0;
@@ -125,7 +127,9 @@
 
 #endif /* CONFIG_SYS_RAMBOOT */
 
-	return dramsize + dramsize2;
+	gd->ram_size = dramsize + dramsize2;
+
+	return 0;
 }
 
 int checkboard (void)