serial: sh-sci: Use plain struct copy in early_console_setup()

serial: sh-sci: Use plain struct copy in early_console_setup()

Using memcpy() prevents the compiler from doing any checking on the
types of the passed pointer parameters.  Copy the structure using struct
assignment instead, to increase type-safety.

No change in generated code on all relevant architectures
(arm/arm64/riscv/sh).

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/e097e5c11afe5bd4c01135779c9a40e707ef6374.1733243287.git.geert+renesas@glider.be
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>