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>

board/sysam/amcore/amcore.c

@@ -14,6 +14,8 @@
 #include <dm.h>
 #include <dm/platform_data/serial_coldfire.h>
 
+DECLARE_GLOBAL_DATA_PTR;
+
 void init_lcd(void)
 {
 	/* setup for possible K0108 lcd connected on the parallel port */
@@ -49,7 +51,7 @@ void fudelay(int usec)
 		asm volatile ("nop");
 }
 
-phys_size_t initdram(void)
+int initdram(void)
 {
 	u32 dramsize, RC;
 
@@ -99,7 +101,10 @@ phys_size_t initdram(void)
 	out_be32(&dc->dacr0, 0x0000b344);
 	out_be32((u32 *)0x00000c00, 0xbeaddeed);
 
-	return get_ram_size(CONFIG_SYS_SDRAM_BASE, CONFIG_SYS_SDRAM_SIZE);
+	gd->ram_size = get_ram_size(CONFIG_SYS_SDRAM_BASE,
+				    CONFIG_SYS_SDRAM_SIZE);
+
+	return 0;
 }
 
 static struct coldfire_serial_platdata mcf5307_serial_plat = {