libbladeRF: bladeRF1-specific API

| libbladeRF 2.2.1-git Nuand bladeRF library

Modules
bladeRF1-specific API

## Description

These functions are thread-safe.

## Modules
| Constants (deprecated)
| Flash image format constants
| Gain stages (deprecated)
| These functions provide control over the device's RX and TX gain stages.
| Sampling Mux
| These functions provide control over internal and direct sampling modes of the LMS6002D.
| LPF Bypass
| These functions provide control over the LPF bypass mode of the LMS6002D.
| SMB clock port control
| The SMB clock port (J62) may be used to synchronize sampling on multiple devices, or to generate an arbitrary clock output for a different device.
| Expansion I/O
| These definitions and functions provide high-level functionality for manipulating pins on the bladeRF1 U74 Expansion Header, and the associated mappings on expansion boards.
| Expansion board support
| This group of functions provides the ability to control and configure expansion boards such as the XB-100, XB-200, and XB-300.
| DC Calibration
| These functions are thread-safe.
| Low-level accessors
| In a most cases, higher-level routines should be used. These routines are only intended to support development and testing.