sysbuild: bootloader: fix Kconfig symbol placement

MCUBOOT_MODE_SINGLE_APP_RAM_LOAD shoud not be a MCUBOOT_MODE choice
because it is not a separate load mode but rather a specific case of MCUBOOT_MODE_RAM_LOAD

Signed-off-by: Abderrahmane JARMOUNI <git@jarmouni.me>

Author: JarmouniA

share/sysbuild/images/bootloader/Kconfig

@@ -126,8 +126,11 @@ config MCUBOOT_MODE_FIRMWARE_UPDATER
 	  mechanism defined for entering the slot1_partition which is a dedicated firmware updater
 	  application used to update the slot0_partition application.
 
+endchoice
+
 config MCUBOOT_MODE_SINGLE_APP_RAM_LOAD
 	bool "Single app RAM load mode"
+	depends on MCUBOOT_MODE_RAM_LOAD
 	help
 	  MCUboot can load the image to RAM from an arbitrary location. In this mode,
 	  MCUboot will copy the image to RAM and begin execution from there. The image
@@ -139,8 +142,6 @@ config MCUBOOT_MODE_SINGLE_APP_RAM_LOAD
 	  not possible to swap back to older version of the application. In fact, none
 	  of the swap operations are supported in this mode.
 
-endchoice
-
 config MCUBOOT_MODE_FIRMWARE_UPDATER_BOOT_MODE_ENTRANCE
 	bool "Firmware updater retention boot mode entrance"
 	depends on MCUBOOT_MODE_FIRMWARE_UPDATER