ARM: dts: msm: Add llcc cache dump support for sdmmagpie

sdmmagpie supports two instance of  Last level cache controller
with 256KB system cache. Add dump size to allocate buffers
for llcc cache dumps.

Change-Id: I205d9b5e024845c23e2d1a1e296817ffca963252
Signed-off-by: Prateek Sood <prsood@codeaurora.org>