ARM: tegra: enable STDIO deregistration
At the very least when USB keyboard support is enabled, we need to enable CONFIG_SYS_STDIO_DEREGISTER, so the "usb reset" is able to re-scan USB ports and find new devices. Enable it everywhere per request from Simon Glass. Signed-off-by: NStephen Warren <swarren@nvidia.com> Reviewed-by: NSimon Glass <sjg@chromium.org> Signed-off-by: NTom Warren <twarren@nvidia.com>
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