At present dm/device.h includes the linux-compatible features. This
requires including linux/compat.h which in turn includes a lot of headers.
One of these is malloc.h which we thus end up including in every file in
U-Boot. Apart from the inefficiency of this, it is problematic for sandbox
which needs to use the system malloc() in some files.

Move the compatibility features into a separate header file.

Signed-off-by: Simon Glass <sjg@chromium.org>

This header was missing a couple of include dependencies when included on its
own.

Signed-off-by: Sean Anderson <seanga2@gmail.com>

Introduce io_gate_val for sandbox clk gate test usage

Signed-off-by: Peng Fan <peng.fan@nxp.com>

Import clk composite clk support from Linux Kernel 5.1-rc5

Signed-off-by: Peng Fan <peng.fan@nxp.com>

Because clk-provider use clk_ops, so let's include clk-uclass.h

Signed-off-by: Peng Fan <peng.fan@nxp.com>

Export the structure for others to use.

Signed-off-by: Peng Fan <peng.fan@nxp.com>

Import clk-gate support from Linux Kernel 5.1-rc5

Signed-off-by: Peng Fan <peng.fan@nxp.com>

Export mux/divider ops and divider_recalc_rate for composite usage

Signed-off-by: Peng Fan <peng.fan@nxp.com>

Add set parent support for clk mux

Signed-off-by: Peng Fan <peng.fan@nxp.com>

The generic mux clock code for CCF requires reading the clock multiplexer
value from HW registers. As sandbox by design has readl() as no-op it was
necessary to provide this value in the other way.

The new field in the mux structure (accessible only when sandbox is run)
has been introduced for this purpose.

Signed-off-by: Lukasz Majewski <lukma@denx.de>