- Copy stable/10 (r259064) to releng/10.0 as part of the
10.0-RELEASE cycle.
- Update __FreeBSD_version [1]
- Set branch name to -RC1

[1] 10.0-CURRENT __FreeBSD_version value ended at '55', so
start releng/10.0 at '100' so the branch is started with
a value ending in zero.

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

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

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

Move unmask IRQ function call up to nexus device level.

FDT-enabled targets were broken after r238043 that relies
on device up the hierarchy to properly setup interrupt.
nexus device for ARM platforms did job only partially:
setting handler but not unmasking interrupt. Unmasking
was performed by platform code.

Reviewed by: andrew@

Trim trailing whitespace...

Allow external interrupts.

- Set the external pin to interrupt in bus_setup_intr
- Implement bus_config_intr for external interrupts
- Extend arm_{,un}mask_irq to work with external interrupts

Approved by: imp (mentor)

Add the s3c24x0 real time clock driver

Approved by: imp (mentor)

Rework how device memory is allocated on the s3c24x0 CPU's.

The device virtual addresses are now able to be allocated at runtime rather
than from the static pmap_devmap at boot. The only exception is memory
required before we have had a chance to dynamically allocate it.

While here reduce the space between the statically allocated devices by
reducing the distance between the virtual addresses.

Approved by: imp (mentor)

Add support for the Samsung S3C2xx0 family of ARM SoCs written by
Andrew Turner. The kernel supports the LN2410SBC evaluation board,
and likely others. These parts (or similar ones) are in some open
hardware designs for phones.

Submitted by: Andrew Turner