stm32mp: stm32prog: add MMC device

Add support of MMC device (based on DFU_MMC backend)
for SD card and eMMC update.

Create a GPT partitioning on the device.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
diff --git a/arch/arm/mach-stm32mp/Kconfig b/arch/arm/mach-stm32mp/Kconfig
index 00e02a3..bf573ac 100644
--- a/arch/arm/mach-stm32mp/Kconfig
+++ b/arch/arm/mach-stm32mp/Kconfig
@@ -112,6 +112,9 @@
 	select DFU
 	select DFU_RAM
 	select DFU_VIRT
+	select PARTITION_TYPE_GUID
+	imply CMD_GPT if MMC
+	imply DFU_MMC if MMC
 	help
 		activate a specific command stm32prog for STM32MP soc family
 		witch update the device with the tools STM32CubeProgrammer,