viafb: fold via_io.h into via-core.h

Preparatory move toward the ultimate goal of moving pan-subdevice stuff
into include/linux.

Cc: ScottFang@viatech.com.cn
Cc: JosephChan@via.com.tw
Cc: Harald Welte <laforge@gnumonks.org>
Acked-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

diff --cc drivers/video/via/hw.h
Simple merge

diff --cc drivers/video/via/share.h
Simple merge

diff --cc drivers/video/via/via-core.h
Simple merge

diff --cc drivers/video/via/via_io.h
Simple merge

diff --cc drivers/video/via/via_modesetting.c
Simple merge

diff --cc drivers/video/via/via_utility.c
Simple merge

diff --cc drivers/video/via/viamode.c
Simple merge