spi: Convert to SPI_CONTROLLER_HALF_DUPLEX

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#	Subject and files	Size	Replies
1/4	spi: Convert to SPI_CONTROLLER_HALF_DUPLEX`drivers/spi/spi-amd.c` `drivers/spi/spi-cavium-thunderx.c` `drivers/spi/spi-falcon.c` +9 more	+12 ~~-12~~	0 replies
2/4	spi: spi-ti-qspi: Convert to platform remove callback returning void`drivers/spi/spi-ti-qspi.c`	+7 -6	0 replies
3/4	spi: spi-ti-qspi: switch to use modern name`drivers/spi/spi-ti-qspi.c`	+44 ~~-44~~	0 replies
4/4	spi: ti-qspi: fix controller deregistration`drivers/spi/spi-ti-qspi.c`	+6 -8	0 replies

No Reviewed-by, Acked-by or Tested-by trailers for v1 yet.