ARM: dts: msm: add memory hole dt node for krypton

Add memory hole used by other subsystem to the device tree, which
is to be carved out by msm_mem_hole driver. This will avoid
dependancy on bootloader memory information.

Change-Id: I5c6b0bbca40eb088f58aa4afcee13cff6c5d93a5
Signed-off-by: mengmeng <mengmeng@codeaurora.org>