spi: add support for V3s SoC

The Allwinner V3s SoC have the same SPI0 pinmux configuration, SPI clock
configuration and SPI controller (base address and the controller) with
H3.

Add spiflash support for it.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>

fel-spiflash.c

@@ -154,6 +154,7 @@ static bool spi0_init(feldev_handle *dev)
 	switch (soc_info->soc_id) {
 	case 0x1625: /* Allwinner A13 */
 	case 0x1680: /* Allwinner H3 */
+	case 0x1681: /* Allwinner V3s */
 	case 0x1718: /* Allwinner H5 */
 		gpio_set_cfgpin(dev, PC, 0, SUNXI_GPC_SPI0);
 		gpio_set_cfgpin(dev, PC, 1, SUNXI_GPC_SPI0);