xlnx-ep108: Fix minimum RAM check

The minimum RAM check logic for the Xiilnx EP108 was off by one,
which caused a false positive. Correct the logic to only print
warnings when the RAM is below 0x8000000.
Signed-off-by: NAlistair Francis <alistair.francis@xilinx.com>
Message-id: fba8112ca7b01efd72553332b8045ecf107b7662.1448021100.git.alistair.francis@xilinx.com
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

hw/arm/xlnx-ep108.c

@@ -51,7 +51,7 @@ static void xlnx_ep108_init(MachineState *machine)
         machine->ram_size = EP108_MAX_RAM_SIZE;
     }
 
-    if (machine->ram_size <= 0x08000000) {
+    if (machine->ram_size < 0x08000000) {
         qemu_log("WARNING: RAM size " RAM_ADDR_FMT " is small for EP108",
                  machine->ram_size);
     }