This function is identical throughout all Winbond superios in
the tree, so move it into superio/winbond/common/early_init.c,
renamed from early_serial.c because it now does more than just
early serial.
Change all affected mainboards to use the unified function.
Change-Id: If05e0db93375641917e538d83aacd1b50fbd033b
Signed-off-by: Keith Hui <buurin@gmail.com>
Reviewed-on: https://review.coreboot.org/21331
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
aaa16fede7