Add support for reading A10 SPI flash

fel-spiflash.c

@@ -160,6 +160,7 @@ static bool spi0_init(feldev_handle *dev)
 		gpio_set_cfgpin(dev, PC, 2, SUNXI_GPC_SPI0);
 		gpio_set_cfgpin(dev, PC, 3, SUNXI_GPC_SPI0);
 		break;
+	case 0x1623: /* Allwinner A10 */
 	case 0x1651: /* Allwinner A20 */
 		gpio_set_cfgpin(dev, PC, 0, SUNXI_GPC_SPI0);
 		gpio_set_cfgpin(dev, PC, 1, SUNXI_GPC_SPI0);