[PATCH 4/4] serial: serial_xen: add DEBUG_UART support

[Tom Rini]

On Thu, Oct 15, 2020 at 01:25:16PM +0900, AKASHI Takahiro wrote:

> By using a hypervisor call, we can implement DEBUG_UART on xen.
> This will allow us to see messages even earlier than serial_init().
> 
> Signed-off-by: AKASHI Takahiro <takahiro.akashi at linaro.org>

Applied to u-boot/master, thanks!

-- 
Tom
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