Fixed errors during compilation of OpenWRT kernel modules

Add driver support for euqalizer monitor:
When the equalizer out is too small (48 out of 52/56) for SIGNAL decoding, watchdoc will reset the receiver

Add/Set the default fft_win_shift of new openofdm_rx to 1, which gives better throughput while receiving udp traffic

Add OPENWIFI_MIN_SIGNAL_LEN_TH 14 to set min pkt length threshold for FPGA signal watchdog

openofdm_rx initialization with the help of macro definition in hw_def.h:

Now changing the macro in hw_def.h will change the related initialization part in all related drivers (rx_intf/xpu/openofdm_

openofdm_rx initialization with the help of macro definition in hw_def.h:

Now changing the macro in hw_def.h will change the related initialization part in all related drivers (rx_intf/xpu/openofdm_rx)

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Remove the unnecessary variable and code from openofdm_rx interface

turn on soft decoding by default in openofdm_rx.c driver

Update openofdm_rx.c

adding license and copyright headers

4 fpga queues and better driver/fpga flow control to avoid crash. improved slice cfg and printing (#23)

prepare upgrade

initial commit