extmod/nimble: Expose BLE_GATT_MAX_PROCS configuration.

For platforms with more ram, MICROPY_HW_BLE_GATT_MAX_PROCS can be increased in mpconfigboard.h to speed up concurrent processing of BLE actions.

Author: pi-anl

extmod/nimble/syscfg/syscfg.h

@@ -75,8 +75,11 @@ int nimble_sprintf(char *str, const char *fmt, ...);
 #define MYNEWT_VAL_BLE_GATT_DISC_SVC_UUID (MYNEWT_VAL_BLE_ROLE_CENTRAL)
 #define MYNEWT_VAL_BLE_GATT_FIND_INC_SVCS (MYNEWT_VAL_BLE_ROLE_CENTRAL)
 #define MYNEWT_VAL_BLE_GATT_INDICATE (1)
-#define MYNEWT_VAL_BLE_GATT_MAX_PROCS (4)
 #define MYNEWT_VAL_BLE_GATT_NOTIFY (1)
+#ifndef MICROPY_HW_BLE_GATT_MAX_PROCS
+#define MICROPY_HW_BLE_GATT_MAX_PROCS (4)
+#endif
+#define MYNEWT_VAL_BLE_GATT_MAX_PROCS (MICROPY_HW_BLE_GATT_MAX_PROCS)
 #define MYNEWT_VAL_BLE_GATT_READ (MYNEWT_VAL_BLE_ROLE_CENTRAL)
 #define MYNEWT_VAL_BLE_GATT_READ_LONG (MYNEWT_VAL_BLE_ROLE_CENTRAL)
 #define MYNEWT_VAL_BLE_GATT_READ_MAX_ATTRS (8)