qcs405: Enable SPI-NOR

Enable support for Gigadevice spi-nor flash.

Change-Id: I340eb3bf77b25fe3502d4b29ef4bf7c06b282c02
Signed-off-by: Nitheesh Sekar <nsekar@codeaurora.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/29968
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/mainboard/google/mistral/Kconfig

@@ -10,6 +10,8 @@ config BOARD_SPECIFIC_OPTIONS
 	select COMMON_CBFS_SPI_WRAPPER
 	select SOC_QUALCOMM_QCS405
 	select SPI_FLASH
+	select SPI_FLASH_GIGADEVICE
+	select SPI_FLASH_WINBOND
 	select MAINBOARD_HAS_CHROMEOS
 
 config VBOOT