OAD return status codes

Macros
#define	OAD_ALREADY_STARTED   4
	OAD is already is progress.
#define	OAD_AUTH_FAIL   12
	Authorization failed.
#define	OAD_BUFFER_OFL   3
	Block Number doesn't match requested.
#define	OAD_CCCD_NOT_ENABLED   15
	CCCD is not enabled, notif can't be sent.
#define	OAD_CRC_ERR   1
	Downloaded image CRC doesn't match.
#define	OAD_DL_COMPLETE   14
	OAD image payload download complete.
#define	OAD_DL_NOT_COMPLETE   6
	An OAD is ongoing.
#define	OAD_EXT_NOT_SUPPORTED   13
	Ctrl point command not supported.
#define	OAD_FLASH_ERR   2
	Flash function failure (int, ext)
#define	OAD_IMAGE_TOO_BIG   8
	Candidate image is too big.
#define	OAD_IMG_ID_TIMEOUT   16
	Image identify timed out, too many failures.
#define	OAD_INCOMPATIBLE_FILE   11
	BIM or FW mismatch.
#define	OAD_INCOMPATIBLE_IMAGE   9
	Image signing failure, boundary mismatch.
#define	OAD_INVALID_FILE   10
	If Invalid image ID received.
#define	OAD_NO_RESOURCES   7
	If memory allocation fails.
#define	OAD_NOT_STARTED   5
	OAD has not yet started.
#define	OAD_SUCCESS   0
	OAD succeeded.

Detailed Description