Blackfin: move SPORT UART resources to boards files
Rather than keeping the pins in the actual driver and worrying about a mess of Kconfig options, declare all the desired pin resources in the boards file. This lets people easily select the specific pins/ports for the normal emulated UART as well as GPIOs for CTS/RTS. Signed-off-by: NSonic Zhang <sonic.zhang@analog.com> Signed-off-by: NMike Frysinger <vapier@gentoo.org>
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