Merge branch 'clocksource/physical-timers' into next/dt

These are a pre-req to get rk3288 SMP to work with some firmwares, so merge
it in here as well as in next/drivers.

* clocksource/physical-timers:
  clocksource: arch_timer: Allow the device tree to specify uninitialized timer registers
  clocksource: arch_timer: Fix code to use physical timers when requested

diff --cc drivers/clocksource/arm_arch_timer.c
Simple merge