Merge tag 'bcm2835-soc-next-2017-08-24' into soc/next

This pull request brings in a move of the bcm2836/7 SMP init code from
the irqchip driver to platsmp.c (general move acked by the maintainer,
v2 of the patch including a squashed in fix to prevent a dependency on
updated DT compatibles) and an added sev() to wake up the secondary
CPUs on newer firmware.  It also garbage collects some stub clock code
from before we had a proper clock driver, which has been acked by the
clk maintainers to go through the ARM trees.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>