lrdp-v2: Start to parse 'core_layout' since msm-4.9

Starting from msm-4.9, a new field named 'core_layout' will be
available to replace 'module_core' in struct module.

Add code to parse the newly introduced field for loadable module
symbol addition based on the Linux kernel version.

Change-Id: I503ba6b0d4f5928bb2fea85ab3fdd4a33150b1c0