sysbuild: image_configurations: set boot banner string for bootloader

Set the NCS Bare Metal boot banner string for the MCUboot bootloader
image to "MCUboot". Prior to this, the boot banner would show the
default "My Application" string.

Signed-off-by: Andreas Moltumyr <[email protected]>

Author: anhmolt

sysbuild/image_configurations/BOOTLOADER_image_default.cmake

@@ -42,4 +42,5 @@ if(SB_CONFIG_SOFTDEVICE_S115)
   set_config_bool(${ZCMAKE_APPLICATION} CONFIG_SOFTDEVICE_PAD_HEADER y)
 endif()
 
+set_config_string(${ZCMAKE_APPLICATION} CONFIG_NCS_BARE_METAL_APPLICATION_BOOT_BANNER_STRING "MCUboot")
 set_config_string(${ZCMAKE_APPLICATION} CONFIG_NCS_APPLICATION_BOOT_BANNER_STRING "") # Silences a warning during CMake image configuration