zephyr: Add direct-xip mode to Zephyr configuration

	  able to modify the flash image itself.

if !SINGLE_IMAGE_DFU

choice

	prompt "Image upgrade modes"

	default BOOT_SWAP_USING_MOVE if SOC_FAMILY_NRF

	default BOOT_SWAP_USING_SCRATCH

config BOOT_SWAP_USING_SCRATCH

	bool "Swap mode that run with the scratch partition"

	help

	  This is the most conservative swap mode but it can work even on

	  devices with heterogeneous flash page layout.

config BOOT_UPGRADE_ONLY

	bool "Overwrite image updates instead of swapping"

	default n

	help

	  If y, overwrite the primary slot with the upgrade image instead

	  of swapping them. This prevents the fallback recovery, but

config BOOT_SWAP_USING_MOVE

	bool "Swap mode that can run without a scratch partition"

	default y if SOC_FAMILY_NRF

	default n

	help

	  If y, the swap upgrade is done in two steps, where first every

	  sector of the primary slot is moved up one sector, then for

	  This allows a swap upgrade without using a scratch partition,

	  but is currently limited to all sectors in both slots being of

	  the same size.

config BOOT_DIRECT_XIP

	bool "Run the latest image directly from its slot"

	help

	  If y, mcuboot selects the newest valid image based on the image version

	  numbers, thereafter the selected image can run directly from its slot

	  without having to move/copy it into the primary slot. For this reason the

	  images must be linked to be executed from the given image slot. Using this

	  mode results in a simpler code path and smaller code size.

endchoice

endif

if !SINGLE_IMAGE_DFU

#define MCUBOOT_SWAP_USING_MOVE 1

#endif

#ifdef CONFIG_BOOT_DIRECT_XIP

#define MCUBOOT_DIRECT_XIP

#endif

#ifdef CONFIG_UPDATEABLE_IMAGE_NUMBER

#define MCUBOOT_IMAGE_NUMBER    CONFIG_UPDATEABLE_IMAGE_NUMBER

#else