[PATCH v2 00/14] add hisilicon soc support

[Haojian Zhuang]

Changelog:
v2:
   1. Rename mach-hs to mach-hi3xxx.
   2. Remove CONFIG_MACH_HS_DT.
   3. Move sp804 dual timer driver into drivers/clocksource.
   4. Make sp804 driver to support DT. Append CLOCKSOURCE_OF_DECLARE() in sp804 driver.
   5. Update hisilicon,hi3620-clkgate & hisilicon,hi3620-clkrst property in clk-hi3xxx driver.