If SPI dependency is not set, the following warning will be generated during compilation:
[109/1450] Building C object drivers/CMakeFiles/drivers.dir/rpmsg/rpmsg_port_spi.c.o
/data/code/nuttxspace/nuttx/drivers/rpmsg/rpmsg_port_spi.c: In function ‘rpmsg_port_spi_exchange’:
/data/code/nuttxspace/nuttx/drivers/rpmsg/rpmsg_port_spi.c:233:3: warning: implicit declaration of function ‘SPI_EXCHANGE’ [-Wimplicit-function-declaration]
233 | SPI_EXCHANGE(rpspi->spi, txhdr, rpspi->rxhdr,
| ^~~~~~~~~~~~
[1450/1450] Pac SIM with dynamic libs in nuttx.tgz
Signed-off-by: lijing.ly <lijing.ly@bytedance.com>
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