arm64: defconfig: Enable STM32 Octo Memory Manager and OcstoSPI driver

Enable STM32 OctoSPI driver.
Enable STM32 Octo Memory Manager (OMM) driver which is needed
for OSPI usage on STM32MP257F-EV1 board.

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Link: https://lore.kernel.org/r/20250630-upstream_omm_ospi_defconfig-v11-1-6e934fabe698@foss.st.com
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>

Author: Patrice Chotard

arch/arm64/configs/defconfig

@@ -581,6 +581,7 @@ CONFIG_SPI_QUP=y
 CONFIG_SPI_QCOM_GENI=m
 CONFIG_SPI_S3C64XX=y
 CONFIG_SPI_SH_MSIOF=m
+CONFIG_SPI_STM32_OSPI=m
 CONFIG_SPI_SUN6I=y
 CONFIG_SPI_TEGRA210_QUAD=m
 CONFIG_SPI_TEGRA114=m
@@ -1520,6 +1521,7 @@ CONFIG_EXTCON_USB_GPIO=y
 CONFIG_EXTCON_USBC_CROS_EC=y
 CONFIG_FSL_IFC=y
 CONFIG_RENESAS_RPCIF=m
+CONFIG_STM32_OMM=m
 CONFIG_IIO=y
 CONFIG_EXYNOS_ADC=y
 CONFIG_IMX8QXP_ADC=m