x86: broadwell: Move init of debug UART to cpu.c
At present the debug UART is set up in sdram.c which is not the best place since it has nothing in particular to do with SDRAM. Since we want to support initing this in SPL too, move it to a common file. Signed-off-by: NSimon Glass <sjg@chromium.org> Reviewed-by: NBin Meng <bmeng.cn@gmail.com> [bmeng: added 'broadwell' tag in the commit title] Signed-off-by: NBin Meng <bmeng.cn@gmail.com>
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