arm: zynq: Wire automatic ddr detection for Zynq and ZynqMP case

When static memory configuration is used U-Boot has capability to detect
memory size in setup range. Enable this feature for static
configuration.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

board/xilinx/zynq/board.c

@@ -184,7 +184,8 @@ int dram_init(void)
 #else
 int dram_init(void)
 {
-	gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
+	gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
+				    CONFIG_SYS_SDRAM_SIZE);
 
 	zynq_ddrc_init();
 

board/xilinx/zynqmp/zynqmp.c

@@ -377,7 +377,8 @@ int dram_init(void)
 #else
 int dram_init(void)
 {
-	gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
+	gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
+				    CONFIG_SYS_SDRAM_SIZE);
 
 	return 0;
 }