ppc4xx: Sequoia has two UARTs in "4-pin" mode. Configure the GPIOs as per schematic.
The Sequoia board has two UARTs in "4-pin" mode. This patch modifies the GPIO configuration to match the schematic, and also sets the SDR0_PFC1 register to select the corresponding mode for the UARTs. Signed-off-by: NSteven A. Falco <sfalco@harris.com> Signed-off-by: NStefan Roese <sr@denx.de>
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