liang yongxiang 99cbadc1d9 [bsp][hifive1] remove unused code 7 lat temu
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SConscript 43922e465e [bsp] add new bsp: hifive1 7 lat temu
board.c 99cbadc1d9 [bsp][hifive1] remove unused code 7 lat temu
board.h 43922e465e [bsp] add new bsp: hifive1 7 lat temu
drv_usart.c 43922e465e [bsp] add new bsp: hifive1 7 lat temu
interrupt.c 43922e465e [bsp] add new bsp: hifive1 7 lat temu
interrupt.h 43922e465e [bsp] add new bsp: hifive1 7 lat temu