Add the necessary DT nodes to probe the clock controllers on MSM
devices as well as hook up the uart nodes to the clock
controllers. This should allow us to boot to a serial console on
all DT enabled MSM platforms.

Cc: David Brown <davidb@codeaurora.org>
Signed-off-by: NStephen Boyd <sboyd@codeaurora.org>
Signed-off-by: NKevin Hilman <khilman@linaro.org>
Signed-off-by: NOlof Johansson <olof@lixom.net>

Add the mmio architected timer node.
Signed-off-by: NStephen Boyd <sboyd@codeaurora.org>
Signed-off-by: NDavid Brown <davidb@codeaurora.org>
Signed-off-by: NOlof Johansson <olof@lixom.net>

Add the restart node so we can reboot the device.
Signed-off-by: NStephen Boyd <sboyd@codeaurora.org>
Signed-off-by: NDavid Brown <davidb@codeaurora.org>
Signed-off-by: NOlof Johansson <olof@lixom.net>

Add support for the Snapdragon 800 MSM8974 SoC, used on the Dragonboard
and others. Board support added in separate patch.
Signed-off-by: NRohit Vaswani <rvaswani@codeaurora.org>
Acked-by: NKumar Gala <galak@codeaurora.org>
Signed-off-by: NDavid Brown <davidb@codeaurora.org>
[olof: split off SoC support in separate patch]
Signed-off-by: NOlof Johansson <olof@lixom.net>