boot/bootutil: Provide prototype for boot_reset_request_hook

int boot_img_install_stat_hook(int image_index, int slot,

                               int *img_install_stat);

/** Hook will be invoked when boot_serial requests device reset.

 *  The hook may be used to prevent device reset.

 *

 * @param force set to true when request tries to force reset.

 *

 * @retval 0 when reset should be performed;

 *         BOOT_RESET_REQUEST_HOOK_BUSY when some processing is still in

 *         progress;

 *         BOOT_RESET_REQUEST_HOOK_TIMEOUT internal process timed out;

 *         BOOT_RESET_REQUEST_HOOK_CHECK_FAILED internal code failed to

 *         obtian status;

 *         BOOT_RESET_REQUEST_HOOK_INTERNAL_ERROR unspecified internal

 *         error while checking status.

 */

int boot_reset_request_hook(bool force);

#define BOOT_RESET_REQUEST_HOOK_BUSY		1

#define BOOT_RESET_REQUEST_HOOK_TIMEOUT		2

#define BOOT_RESET_REQUEST_HOOK_CHECK_FAILED	3

#define BOOT_RESET_REQUEST_HOOK_INTERNAL_ERROR	4

#endif /*H_BOOTUTIL_HOOKS*/