arm/imx6q: add core drivers clock, gpc, mmdc and src

It adds a number of core drivers support for imx6q, including clock,
General Power Controller (gpc), Multi Mode DDR Controller(mmdc) and
System Reset Controller (src).

Signed-off-by: Ranjani Vaidyanathan <ra5478@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
6 files changed