spi: Kconfig: Add STM32F4 support for STM32_QSPI driver

Allow to select STM32_QSPI driver on STM32F4 SoCs.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
index fb794ad..e9dadf0 100644
--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -222,7 +222,7 @@
 
 config STM32_QSPI
 	bool "STM32F7 QSPI driver"
-	depends on STM32F7 || ARCH_STM32MP
+	depends on STM32F4 || STM32F7 || ARCH_STM32MP
 	help
 	  Enable the STM32F7 Quad-SPI (QSPI) driver. This driver can be
 	  used to access the SPI NOR flash chips on platforms embedding