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/motionpro/motionpro.c b/board/motionpro/motionpro.c
index 3e2fe65..a2520bc 100644
--- a/board/motionpro/motionpro.c
+++ b/board/motionpro/motionpro.c
@@ -19,6 +19,8 @@
 #include <status_led.h>
 #endif /* CONFIG_LED_STATUS */
 
+DECLARE_GLOBAL_DATA_PTR;
+
 /* Kollmorgen DPR initialization data */
 struct init_elem {
 	unsigned long addr;
@@ -116,7 +118,7 @@
 /*
  * Initalize SDRAM - configure SDRAM controller, detect memory size.
  */
-phys_size_t initdram(void)
+int initdram(void)
 {
 	ulong dramsize = 0;
 #ifndef CONFIG_SYS_RAMBOOT
@@ -172,7 +174,9 @@
 #endif /* CONFIG_SYS_RAMBOOT */
 
 	/* return total ram size */
-	return dramsize;
+	gd->ram_size = dramsize;
+
+	return 0;
 }