Add code to retrieve module specific symbol info from per-module
kallsyms nodes when CONFIG_KALLSYMS is defined. Symbols retrieved
from kallsyms nodes will be more accurate because relocation
has already been done when the per-module kallsyms nodes are
formed.

Add the following options to control how the symbol info will
be recorded in lrdp-v2 output files:

--dump_mod_sym_tbl: dump per-module symbol info retrieved from
                    module specific symbol files.
--dump_krnl_sym_tbl: dump Linux kernel symbol info retrieved
                     from the kernel symbol file.
--dump_mod_kallsyms: dump per-module symbol info retrieved from
                     per-module kallsyms node.
--dump_glb_sym_tbl: dump everything in the global symbol lookup
                    table.

Change-Id: Ic137eaf64a5e1f7203946d323efcd7527e3f1968