Copy stable/10@r272459 to releng/10.1 as part of
the 10.1-RELEASE process.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

MFC r257170, r257171, r257172, r257240, r257278, r257279, r257280, r257281,
r257282, r257332

Wait for DesignWare UART transfers completion before accessing line control

Enable UART busy detection handling for Armada XP - based board

Enable SATA interface on Armada XP
Run mvs SATA driver on Armada XP instead of old mv_sata

Retire arm_remap_nocache() and the data and constants associated with it.

Remove hard-coded mappings related to Armada XP support

Fix-up DTB for Armada XP registers' base according to the actual settings

Change Armada XP kernel load address to the u-boot's end address

Remove not working and deprecated PJ4Bv6 support

Switch off explicit broadcasting of the TLB flush operations for PJ4B CPU

Add missing ARMv6 CPU functions to ARM Makefile

MFC r258787:
r258780 should not have applied to .S files.

MFC r258779,r258780,r258787,r258822:

Fix undefined behavior: (1 << 31) is not defined as 1 is an int and this
shifts into the sign bit. Instead use (1U << 31) which gets the
expected result.

Similar to the (1 << 31) case it is not defined to do (2 << 30).

This fix is not ideal as it assumes a 32 bit int, but does fix the issue
for most cases.

A similar change was made in OpenBSD.

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Properly initialize Armada XP MP subsystem.

- correct setting of Auxiliary Control Register for MP mode
- correct setting of Auxiliarty Debug registers
- cleanup management of memory contains bootup code
- early initialization of Coherency Fabric (MP and not-MP mode)
- enable Snoop Filtering

Obtained from: Semihalf

Add an END macro to ARM. This is mostly used to tell gas where the bounds
of the functions are when creating the EABI unwind tables.

Merging projects/armv6, part 1

Cummulative patch of changes that are not vendor-specific:
- ARMv6 and ARMv7 architecture support
- ARM SMP support
- VFP/Neon support
- ARM Generic Interrupt Controller driver
- Simplification of startup code for all platforms