mx6qsabreauto: Avoid hardcoded RAM size

Instead of passing the total RAM size via PHYS_SDRAM_SIZE option,
we should better use imx_ddr_size() function, which automatically
determines the RAM size.
Signed-off-by: NVanessa Maegima <vanessa.maegima@nxp.com>
Acked-by: NFabio Estevam <fabio.estevam@nxp.com>

board/freescale/mx6qsabreauto/mx6qsabreauto.c

@@ -64,7 +64,7 @@ DECLARE_GLOBAL_DATA_PTR;
 
 int dram_init(void)
 {
-	gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
+	gd->ram_size = imx_ddr_size();
 
 	return 0;
 }

include/configs/mx6qsabreauto.h

@@ -13,7 +13,6 @@
 #define CONFIG_MXC_UART_BASE	UART4_BASE
 #define CONFIG_CONSOLE_DEV		"ttymxc3"
 #define CONFIG_MMCROOT			"/dev/mmcblk0p2"
-#define PHYS_SDRAM_SIZE		(2u * 1024 * 1024 * 1024)
 
 /* USB Configs */
 #define CONFIG_USB_EHCI