soc: qcom: Add support for per-CPU scandump sizes

Add support for specification of per-CPU scandump sizes.
If the scandump sizes are not specified in the correct
format, then no memory will be allocated for the scandump
region of any CPU.

Change-Id: I7d8a192f38ed665fec4a53f011fff62f453ffcd3
Signed-off-by: Isaac J. Manjarres <isaacm@codeaurora.org>