rockchip: veyron: Enable Winbond SPI flash

Some veyron boards seem to have Winbond SPI flash chips instead of
GigaDevice ones. At the very least, coreboot builds for veyron boards
have them enabled [1]. Enable support for them here as well.

[1] https://review.coreboot.org/c/coreboot/+/9719

Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/configs/chromebit_mickey_defconfig b/configs/chromebit_mickey_defconfig
index d430235..253ef99 100644
--- a/configs/chromebit_mickey_defconfig
+++ b/configs/chromebit_mickey_defconfig
@@ -81,6 +81,7 @@
 CONFIG_MTD=y
 CONFIG_SF_DEFAULT_BUS=2
 CONFIG_SPI_FLASH_GIGADEVICE=y
+CONFIG_SPI_FLASH_WINBOND=y
 CONFIG_PINCTRL=y
 CONFIG_PINCONF=y
 CONFIG_SPL_PINCTRL=y