ARM: dts: qcom: Add support for MSM8226 SoC

Implement basic device tree support for MSM8226 SoC which belongs to the
Snapdragon 400 family. For now, this file adds the basic nodes like gcc,
pinctrl and other required configuration for booting up to the serial
console.

Signed-off-by: Bartosz Dudziak <bartosz.dudziak@snejp.pl>
Link: https://lore.kernel.org/r/20210418122909.71434-4-bartosz.dudziak@snejp.pl


Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>