imx_fec: Add support for multiple Tx DMA rings
More recent version of the IP block support more than one Tx DMA ring, so add the code implementing that feature. Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Jason Wang <jasowang@redhat.com> Cc: Philippe Mathieu-Daudé <f4bug@amsat.org> Cc: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org Cc: yurovsky@gmail.com Reviewed-by: NPeter Maydell <peter.maydell@linaro.org> Signed-off-by: NAndrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
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