In preparation for CCF migration for IPUv3 separate existing clock code
to legacy files. These will be used by i.MX5 that currently does not
support the CCF. No functional change.

Signed-off-by: Brian Ruley <brian.ruley@gehealthcare.com>

Get rid of most globals that are spread around between TU's and place
them in their own structs managed by dm. Device state is now owned by
each driver instance. This design mirrors the Linux IPUv3 driver
architecture.

This work is done in preparation to migrate the driver to the clock
framework. While not the primary intent, this change also enables
multiple IPU instances to exist contemporarily.

Signed-off-by: Brian Ruley <brian.ruley@gehealthcare.com>

The API should provide clear distinction in the order of parameters.

Signed-off-by: Brian Ruley <brian.ruley@gehealthcare.com>

U-Boot style specifies to use snake case and checkpatch nudge to check
them every time.

Signed-off-by: Brian Ruley <brian.ruley@gehealthcare.com>

Conform with U-Boot guidelines and pass checkpatch checks for upcoming
changes.

Signed-off-by: Brian Ruley <brian.ruley@gehealthcare.com>

Bring the code into compliance with U-Boot's coding style guidelines for
upcoming changes. Sort includes to tidy things up and apply
{ RemoveBracesLLVM: true } to remove unnecessary blocks.

Signed-off-by: Brian Ruley <brian.ruley@gehealthcare.com>

These functions don't seem to be defined nor called anywhere so remove
them.

Signed-off-by: Brian Ruley <brian.ruley@gehealthcare.com>

Drop all duplicate newlines. No functional change.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>

Place ipuv3 files and headers in custom driver subdirectory.

Signed-off-by: Anatolij Gustschin <agust@denx.de>