mfd: cros_ec: Add fingerprint API

#define EC_MKBP_TABLET_MODE	1

#define EC_MKBP_BASE_ATTACHED	2

/* Fingerprint events in 'fp_events' for EC_MKBP_EVENT_FINGERPRINT */

#define EC_MKBP_FP_RAW_EVENT(fp_events) ((fp_events) & 0x00FFFFFF)

#define EC_MKBP_FP_ERRCODE(fp_events)   ((fp_events) & 0x0000000F)

#define EC_MKBP_FP_ENROLL_PROGRESS_OFFSET 4

#define EC_MKBP_FP_ENROLL_PROGRESS(fpe) (((fpe) & 0x00000FF0) \

					 >> EC_MKBP_FP_ENROLL_PROGRESS_OFFSET)

#define EC_MKBP_FP_MATCH_IDX_OFFSET 12

#define EC_MKBP_FP_MATCH_IDX_MASK 0x0000F000

#define EC_MKBP_FP_MATCH_IDX(fpe) (((fpe) & EC_MKBP_FP_MATCH_IDX_MASK) \

					 >> EC_MKBP_FP_MATCH_IDX_OFFSET)

#define EC_MKBP_FP_ENROLL               BIT(27)

#define EC_MKBP_FP_MATCH                BIT(28)

#define EC_MKBP_FP_FINGER_DOWN          BIT(29)

#define EC_MKBP_FP_FINGER_UP            BIT(30)

#define EC_MKBP_FP_IMAGE_READY          BIT(31)

/* code given by EC_MKBP_FP_ERRCODE() when EC_MKBP_FP_ENROLL is set */

#define EC_MKBP_FP_ERR_ENROLL_OK               0

#define EC_MKBP_FP_ERR_ENROLL_LOW_QUALITY      1

#define EC_MKBP_FP_ERR_ENROLL_IMMOBILE         2

#define EC_MKBP_FP_ERR_ENROLL_LOW_COVERAGE     3

#define EC_MKBP_FP_ERR_ENROLL_INTERNAL         5

/* Can be used to detect if image was usable for enrollment or not. */

#define EC_MKBP_FP_ERR_ENROLL_PROBLEM_MASK     1

/* code given by EC_MKBP_FP_ERRCODE() when EC_MKBP_FP_MATCH is set */

#define EC_MKBP_FP_ERR_MATCH_NO                0

#define EC_MKBP_FP_ERR_MATCH_NO_INTERNAL       6

#define EC_MKBP_FP_ERR_MATCH_NO_TEMPLATES      7

#define EC_MKBP_FP_ERR_MATCH_NO_LOW_QUALITY    2

#define EC_MKBP_FP_ERR_MATCH_NO_LOW_COVERAGE   4

#define EC_MKBP_FP_ERR_MATCH_YES               1

#define EC_MKBP_FP_ERR_MATCH_YES_UPDATED       3

#define EC_MKBP_FP_ERR_MATCH_YES_UPDATE_FAILED 5

/*****************************************************************************/

/* Temperature sensor commands */