configs: sopine-baseboard: Enable SPI-FLASH

SoPine has winbond SPI-FLASH, so enable the same in defconfig
and add aliases for spi0 in -u-boot.dtsi

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
diff --git a/configs/sopine_baseboard_defconfig b/configs/sopine_baseboard_defconfig
index 5833234..c9123fd 100644
--- a/configs/sopine_baseboard_defconfig
+++ b/configs/sopine_baseboard_defconfig
@@ -10,6 +10,7 @@
 CONFIG_MMC0_CD_PIN=""
 CONFIG_MMC_SUNXI_SLOT_EXTRA=2
 CONFIG_SPL_SPI_SUNXI=y
+CONFIG_SPI_FLASH_WINBOND=y
 # CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
 CONFIG_USE_PREBOOT=y
 CONFIG_SYS_SPI_U_BOOT_OFFS=0x8000