Merge tags 'berlin64-soc-for-4.4-1', 'berlin64-dt-for-4.4-1', 'berlin-dt-for-4.4...

Merge tags 'berlin64-soc-for-4.4-1', 'berlin64-dt-for-4.4-1', 'berlin-dt-for-4.4-1', 'berlin-new-cpuclk-for-4.4-1' and 'berlin-soc-for-4.4-2' into berlin/for-next

Marvell Berlin ARM64 SoC for 4.4 take 1
- enable ARCH_REQUIRE_GPIOLIB for DW GPIO driver

Marvell Berlin ARM64 DT for 4.4 take 1
- add BG4CT GPIO nodes
- add BG4CT STB reference board

Marvell Berlin DT for 4.4 take 1
- use serial aliases and stdout path
- add cpufreq properties to all SoCs
- add pwm nodes for all SoCs

This depends on topic branch berlin-cpuclk-for-4.4-1

Marvell Berlin BG2Q CPU clock driver:
- add BG2Q CPU clock to clk driver

Marvell Berlin SoC for 4.4 take 2
- use the non-self-clearing reset register
- add cpu hotplug support