arm/dt: msm8610: Add gpio_keys,i2c,emmc,sd,spmi support for qrd.

Here add the common feature for qrd platform, which is the same
with MTP accroding to the schematic diagram.

Move I/O devices to a dedicated SoC node.

Change-Id: I51d1fc8d1f5bf8a0fb8c573b44ac0ee492773feb
Signed-off-by: Richard Liu <richardl@codeaurora.org>