nuttx: extend configuration options

 * the default upgrade mode.

 */

/* Uncomment to enable the overwrite-only code path. */

/* Enable the overwrite-only code path. */

/* #define MCUBOOT_OVERWRITE_ONLY */

#ifdef MCUBOOT_OVERWRITE_ONLY

#ifdef CONFIG_MCUBOOT_OVERWRITE_ONLY

#  define MCUBOOT_OVERWRITE_ONLY

#endif

/* Uncomment to only erase and overwrite those primary slot sectors needed

/* Only erase and overwrite those primary slot sectors needed

 * to install the new image, rather than the entire image slot.

 */

/* #define MCUBOOT_OVERWRITE_ONLY_FAST */

#ifdef CONFIG_MCUBOOT_OVERWRITE_ONLY_FAST

#  define MCUBOOT_OVERWRITE_ONLY_FAST

#endif

/* Enable the direct-xip code path. */

#ifdef CONFIG_MCUBOOT_DIRECT_XIP

#  define MCUBOOT_DIRECT_XIP

#endif

/* Uncomment to enable the direct-xip code path. */

/* Enable the revert mechanism in direct-xip mode. */

/* #define MCUBOOT_DIRECT_XIP */

#ifdef CONFIG_MCUBOOT_DIRECT_XIP_REVERT

#  define MCUBOOT_DIRECT_XIP_REVERT

#endif

/* Uncomment to enable the ram-load code path. */

/* Enable the ram-load code path. */

/* #define MCUBOOT_RAM_LOAD */

#ifdef CONFIG_MCUBOOT_RAM_LOAD

#  define MCUBOOT_RAM_LOAD

#endif

/* Enable bootstrapping the erased primary slot from the secondary slot */

#ifdef CONFIG_MCUBOOT_BOOTSTRAP

#  define MCUBOOT_BOOTSTRAP

#endif

/* Cryptographic settings

 *