NCS v2.4.0 Add MCUboot and MCUmgr over UART to an application

ncs_2.4.0+_application_add_mcuboot.conf

# Add MCUboot and DFU over UART to application
# Applicable for NCS 2.4.0+

CONFIG_BOOTLOADER_MCUBOOT=y
CONFIG_MCUMGR=y
CONFIG_MCUMGR_GRP_IMG=y

# DFU over UART
CONFIG_MCUMGR_TRANSPORT_UART=y

# CONFIG_MCUMGR_TRANSPORT_UART dependencies
CONFIG_BASE64=y

# CONFIG_MCUMGR_GRP_IMG dependencies
CONFIG_FLASH=y
CONFIG_IMG_MANAGER=y

# CONFIG_IMG_MANAGER dependencies
CONFIG_STREAM_FLASH=y

# CONFIG_MCUMGR dependencies
CONFIG_NET_BUF=y
CONFIG_ZCBOR=y

# Required for CONFIG_IMG_MANAGER
CONFIG_FLASH_MAP=y