ARM: dts: Add properties for llcc configuration

Add one device tree property to the SoC llcc node to
communicate target capability of configuration
of registers that enable capacity based allocation and power
collapse retention.

Change-Id: Ie1c6937cf17fd1c29334f76abe31fbcdc1ec7cb4
Signed-off-by: Isaac J. Manjarres <isaacm@codeaurora.org>