iicbus: Move twsi under a new controller subdirectory

The folder is a mess so start moving stuff into sub-directories.

Sponsored by: Beckhoff Automation GmbH & Co. KG
Differential Revision: https://reviews.freebsd.org/D41907

sys: Remove $FreeBSD$: one-line sh pattern

Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/

Add ARMADA38X gateclk control

This patch introduces basic gate control driver for Armada38x SoC.
Each gate controls coreclk output to a given peripheral.

Reviewed by: manu
Obtained from: Semihalf
Differential Revision: https://reviews.freebsd.org/D36455

Add ARMADA38X clkgen driver

This patch introduces clkgen driver for Armada38x SoCs.
Clock topology consists of single coreclk which supplies
clock signal to CPU cores and peripherials.

Reviewed by: manu
Obtained from: Semihalf
Differential Revision: https://reviews.freebsd.org/D36453

Remove old Marvell drivers

These have probe functions that can only match device tree files that
have been removed because the boards they describe are unsupported.

Reviewed by: imp, manu
Sponsored by: Innovate UK
Differential Revision: https://reviews.freebsd.org/D28366

Restore XHCI operation on Armada 38x

r347343 split generic xhci driver into three files.
Include generic_xhci_fdt.c when building kernel for Armada SoCs.
This brings back XHCI support on these platforms and also
others, which use GENERIC config.

Submitted by: Kornel Duleba
Obtained from: Semihalf
MFC after: 1 week
Sponsored by: Stormshield
Differential Revision: https://reviews.freebsd.org/D24944

Remove NAND and NANDFS support

NANDFS has been broken for years. Remove it. The NAND drivers that
remain are for ancient parts that are no longer relevant. They are
polled, have terrible performance and just for ancient arm
hardware. NAND parts have evolved significantly from this early work
and little to none of it would be relevant should someone need to
update to support raw nand. This code has been off by default for
years and has violated the vnode protocol leading to panics since it
was committed.

Numerous posts to arch@ and other locations have found no actual users
for this software.

Relnotes: Yes
No Objection From: arch@
Differential Revision: https://reviews.freebsd.org/D20745

arm: Add kern_clocksource.c directly in files.arm

This files is needed and included in all our config so move it to a common
location.

MFC after: 2 weeks

Fix armv6/armv7 build after the move from xhci_mv to generic_xhci

Add the driver for the SPI controller on ARMADA38X.

Tested on Clearfog (Pro) and SG-3100.

Sponsored by: Rubicon Communications, LLC (Netgate)

Use PLATFORM for initializing Marvell ArmadaXP and Armada38X

Spliting armv5 and armv7 machdep is necessary for adding Armada38X and
ArmadaXP to GENERIC config.
PLATFORM framework checks SOC type in FDT and will select proper
initialization function implementation during runtime.
Pointers to SoC specific implementation are stored in array of
platform_method_t and provided to framework by FDT_PLATFORM_DEF macro.
PLATFORM framework supports also reset function. To simplify implementation
cpu_reset is moved from mv_common to armv5 and armv7 machdep.

Armada38X and ArmadaXP share now common list of files, so resolve all
dependencies as well.

Submitted by: Rafal Kozik <rk@semihalf.com>
Marcin Wojtas <mw@semihalf.com>
Reviewed by: mw
Obtained from: Semihalf
Sponsored by: Stormshield
Differential Revision: https://reviews.freebsd.org/D14744

Make get_tclk and get_cpu_freq generic for Marvell armv7 SoCs

In GENERIC kernel choosing proper get_tclk and get_cpu_freq implementation must
be done in runtime. Kernel for both SoC need to have implementation of each
other functions, so common file list mv/files.arm7 is added.
Marvell armv5 SoC have their own non-generic implementation of those function.

Submitted by: Rafal Kozik <rk@semihalf.com>
Obtained from: Semihalf
Sponsored by: Stormshield
Differential Revision: https://reviews.freebsd.org/D14739