- Copy stable/10@285827 to releng/10.2 in preparation for 10.2-RC1
builds.
- Update newvers.sh to reflect RC1.
- Update __FreeBSD_version to reflect 10.2.
- Update default pkg(8) configuration to use the quarterly branch.[1]

Discussed with: re, portmgr [1]
Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

MFC r279723, r279724:

Define new linker set, UART_FDT_CLASS_AND_DEVICE, for registering full
(class and device) FDT UART. Define second one, UART_FDT_CLASS, for UART
class only.

Move the uart_class definitions and fdt compat data into the individual
uart implementations, and export them using the new linker-set mechanism.

MFC r279239:

Enable 'receive timeout' interrupt allowing us to not
loose 'rx buffer full' event.

MFC r272399, r272602, r274451, r274452:

Add uart driver for Qualcomm MSM 7000/8000 series chips.
It is working on IFC6410 board which has Qualcomm Snapdragon SoC.

Use documented compat string for msm uart.

Make PL011 UART to wait on putc only when TX FIFO is full

Make uart_bus_fdt a decendant of ofwbus

MFC: r260889, r260890, r260911:

r260911 | imp | 2014-01-20 10:45:36 -0700 (Mon, 20 Jan 2014) | 5 lines

Don't lock in the generic grab just to lock again in the specific grabs.

r260890 | imp | 2014-01-19 12:39:13 -0700 (Sun, 19 Jan 2014) | 11 lines

Introduce grab and ungrab upcalls. When the kernel desires to grab the
console, it calls the grab functions. These functions should turn off
the RX interrupts, and any others that interfere. This makes mountroot
prompt work again. If there's more generalized need other than
prompting, many of these routines should be expanded to do those new
things.

Reviewed by: bde (with reservations)

MFC r256815:

Calculate the baud rate divisor rather than using a hard-coded value.

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

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

Fix low-level uart drivers that set their fifo sizes in the softc too late.

uart(4) allocates send and receiver buffers in attach() before it calls
the low-level driver's attach routine. Many low-level drivers set the
fifo sizes in their attach routine, which is too late. Other drivers set
them in the probe() routine, so that they're available when uart(4)
allocates buffers. This fixes the ones that were setting the values too
late by moving the code to probe().

Separate interrupts enable/disable logic from setting port parameters.
Otherwise setting baud rate in TTY mode effectively disables TX/RX
interrupts and renders port unusable.

Add PrimeCell UART (PL011) driver

Obtained from: Semihalf