armv8: layerscape: Fix DDR size calcuation for SPL build

Commit 088454cd dropped return value from initram(), setting
gd->ram_size directly. Three boards were missed for SPL boot.

Signed-off-by: York Sun <york.sun@nxp.com>

board/freescale/ls1043aqds/ddr.c

@@ -113,7 +113,9 @@ int fsl_initdram(void)
 	phys_size_t dram_size;
 
 #if defined(CONFIG_SPL) && !defined(CONFIG_SPL_BUILD)
-	return fsl_ddr_sdram_size();
+	gd->ram_size = fsl_ddr_sdram_size();
+
+	return 0;
 #else
 	puts("Initializing DDR....using SPD\n");
 

board/freescale/ls1046aqds/ddr.c

@@ -97,7 +97,9 @@ int fsl_initdram(void)
 	phys_size_t dram_size;
 
 #if defined(CONFIG_SPL) && !defined(CONFIG_SPL_BUILD)
-	return fsl_ddr_sdram_size();
+	gd->ram_size = fsl_ddr_sdram_size();
+
+	return 0;
 #else
 	puts("Initializing DDR....using SPD\n");
 

board/freescale/ls1046ardb/ddr.c

@@ -101,7 +101,9 @@ int fsl_initdram(void)
 	phys_size_t dram_size;
 
 #if defined(CONFIG_SPL) && !defined(CONFIG_SPL_BUILD)
-	return fsl_ddr_sdram_size();
+	gd->ram_size = fsl_ddr_sdram_size();
+
+	return 0;
 #else
 	puts("Initializing DDR....using SPD\n");