core: drivers: serial8250_uart: Add DT support
core: drivers: serial8250_uart: Add DT support

Add DT support for serial8250 uart driver. The matchtable currently
supports allwinner H2+ SoC.

Reviewed-by: Jens Wiklander <7706914404370d7502c27a0eff493dcf491feb51@linaro.org>
Reviewed-by: Jerome Forissier <ced78d268b4c9a0a20a59a9feeebd2ad90da03d3@linaro.org>
Signed-off-by: Ying-Chun Liu (PaulLiu) <d85c815cccd4e7eb2bf30ecc174aeb0eef10ab96@debian.org>

pascal-brand-st-dev/optee_os,pascal-brand-st-dev/optee_os,pascal-brand-st-dev/optee_os,pascal-brand-st-dev/optee_os,pascal-brand-st-dev/optee_os