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/sbc8349/sbc8349.c b/board/sbc8349/sbc8349.c
index b20de4c..f01cd7e 100644
--- a/board/sbc8349/sbc8349.c
+++ b/board/sbc8349/sbc8349.c
@@ -19,6 +19,8 @@
 #include <libfdt.h>
 #endif
 
+DECLARE_GLOBAL_DATA_PTR;
+
 int fixed_sdram(void);
 void sdram_init(void);
 
@@ -35,7 +37,7 @@
 
 #define ns2clk(ns) (ns / (1000000000 / CONFIG_8349_CLKIN) + 1)
 
-phys_size_t initdram(void)
+int initdram(void)
 {
 	volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
 	u32 msize = 0;
@@ -61,8 +63,10 @@
 	 */
 	ddr_enable_ecc(msize * 1024 * 1024);
 #endif
-	/* return total bus SDRAM size(bytes)  -- DDR */
-	return (msize * 1024 * 1024);
+	/* set total bus SDRAM size(bytes)  -- DDR */
+	gd->ram_size = msize * 1024 * 1024;
+
+	return 0;
 }
 
 #if !defined(CONFIG_SPD_EEPROM)