Add 12-bit Mode and Support For 122.88 Msps

[daniel-endraws]

Changes to libbladeRF, FX3 firmware, and the FPGA to add support for a 12-bit packed format and boost maximum FX3 throughput to 3.054 Gbps. The following are from the CHANGELOGs:

libbladeRF v2.133.0 (2024-06-05)

This version of libbladeRF (modified from v2.5.0) is intended for use with:

FX3 Firmware v2.132.0
FPGA v0.143.1

These version numbers are indicated with a 1 in the MSB, the smallest width
being a byte, hence an added 2^7 = 128 to all previous version numbers.

New features:

• Added BLADERF_FORMAT_SC12_Q11 and BLADERF_FORMAT_SC12_Q11_META for RX
  • This format is identical to corresponding 16-bit formats but is not sign
    extended when sent from the FPGA -> host, instead packed as 12 bits.
  • When using bladerf_sync_rx(), the 12 bit samples can be unpacked and
    byte aligned into a buffer identical to BLADERF_FORMAT_SC16_Q11 using
    bladerf_align_12_bit_buffer() or bladerf_align_and_deinterleave_12_bit_buffer()
    • The RX discontinuity test (host/libraries/libbladeRF_test/test_rx_discont) has been updated to reflect this and can be called after building as ./output/libbladeRF_test_rx_discont -c 1 -p 8192 -i 100000 -b 16384 -n 256 -x 31 -m 12m -s 122.88M
• Added BLADERF_META_STATUS_SW_OVERRUN and BLADERF_META_STATUS_HW_OVERRUN
  to distinguish between discontinuities detected in metadata mode leaving the
  FPGA (HW) vs discontinuities experienced only by the host (SW).
  • Messages that are invalid due to a HW overrun are considered invalid and
    are subsequently skipped

Bug fixes:

• sync.c: fix timestamp seeking for two channels
• Removed unused but set variables causing compilation errors on macOS
• bladerf.c: actually enable oversampling mode for bladerf_set_sample_rate

FX3 Firmware v2.132.0 (2023-06-05)

For the RX (device -> host):

• Enable USB bursting
  • By default the FX3 does not try to combine buffers for a single burst
• Increase buffer sizes to improve USB burst
  • Eliminate delays associated with switching (see benchmark/README.md)
• Move to a multi-channel DMA, interleaving channels to reduce delay
• Added benchmark code and results to the benchmark directory

FPGA v0.143.1 (2024-06-05)

Add a 12-bit mode to overcome GPIF limitations for the bladerf2.

As a consequence of required changes to firmware,
packet mode is no longer supported.

Features:

• bladerf2: 12bit mode added
• bladerf2: hardware overrun checks added
• hdl: support multiple messages per GPIF buffer and interleaving buffers

Fixes:

• hdl: Fix off by one dual rx which also fixed some libusb timeouts