Fixed errors during compilation of OpenWRT kernel modules

Fix typo of printing in tx_intf.c

Remove unnecessary reg code in tx_intf.c

Though the SIFS definition in 2.4GHz is 10us, the actual gap is still 16us:
1. Confirmed by CMW270 in OFDM mode (10us is for 11b where viterbi decoder is not needed)
2. See Signal Extension in 18.3.2

Though the SIFS definition in 2.4GHz is 10us, the actual gap is still 16us:
1. Confirmed by CMW270 in OFDM mode (10us is for 11b where viterbi decoder is not needed)
2. See Signal Extension in 18.3.2.4 ERP-OFDM PPDU format of 802.11-2020

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No need to consider 4 last pkt from 4 queue in master branch:
Always assume Linux schedule 4 priority queue to 4 FPGA queue via 1 on 1 mapping

Change the default bb_gain from 290 to 250 in tx_intf:

- 2022-03-04 detailed test result:
- - bb_gain 290 work for 11a/g all mcs
- - bb_gain 290 work for 11n mcs 1~7 (aggr and non aggr)
- - bb_gain

Change the default bb_gain from 290 to 250 in tx_intf:

- 2022-03-04 detailed test result:
- - bb_gain 290 work for 11a/g all mcs
- - bb_gain 290 work for 11n mcs 1~7 (aggr and non aggr)
- - bb_gain 290 destroy 11n mcs 0 long (MTU 1500) tx pkt due to high PAPR (Peak to Average Power Ratio)
- - bb_gain 250 work for 11n mcs 0
So, a conservative bb_gain 250 should be used

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Remove/modify the tx_intf register API according to the new FPGA:
1. mixer/duc is not needed because we will not use offset tuning after the ad9361 tx lo control via FPGA is supported.
2. source sele

Remove/modify the tx_intf register API according to the new FPGA:
1. mixer/duc is not needed because we will not use offset tuning after the ad9361 tx lo control via FPGA is supported.
2. source selection register is not needed as well.
3. arbitrary IQ register is added.

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use FPGA fifo count registers instead of software queue_cnt

tx_intf update: PKT_INFO*_[read/write] handlers and openwifi_fpga_type

A-MPDU tx aggregation support

CSI fuzzer feature -- document to be finished

remove all the compiling warnings when build 32bit driver

Merge pull request #54 from lnceballosz/master

NGI0 - Updating licensing aspects according REUSE

Update tx_intf.c

adding license and copyright headers

Linux queue waking/sleeping decision update: LARGE FPGA models were using small MAX_NUM_DMA_SYMBOL but now is based on /proc/device-tree/model information

the side channel (timestamp, frequency offset, CSI, equalizer) feature

update source coed of: 4 fpga queues and better driver/fpga flow control to avoid crash. improved slice cfg and printing

prepare upgrade

prepare for release

initial commit