sys: Remove $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

arm: Rename pte-v6.h to pte.h

There is no need for this to be versioned after the removal of armv4/v5

Sponsored by: Arm Ltd
Differential Revision: https://reviews.freebsd.org/D41139

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix

platform_mpp_init: eliminate write only tuples variable

Sponsored by: Netflix

arm: clean up empty lines in .c and .h files

Move fdt_is_type to be a Marvell specific function. It's not used by any
other SoCs.

Sponsored by: DARPA, AFRL

Make Marvell Armada reset registers usage generic

Define reset registers for both Armada38X and ArmadaXP and
choose proper one during runtime based on information from FDT.

Submitted by: Rafal Kozik <rk@semihalf.com>
Obtained from: Semihalf
Sponsored by: Stormshield
Differential Revision: https://reviews.freebsd.org/D14745

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