espsystem: Rearchitecture and fix eh_frame_parser bugs

eh_frame_parser is architecture independent, thus the files have
been rearchitectured. Some bugs have been fixed in the test.
A README file has also been added to eh_frame_parser host test
directory.

eh_frame_parser is now able to detect empty gaps in .eh_frame_hdr
table (missing DWARF information).
Fix a bug occuring when parsing backtraces originated from abort().
Fix build missing dependencies issue.

CMakeLists.txt

@@ -15,6 +15,7 @@ unset(link_options)
 
 # Add the following build specifications here, since these seem to be dependent
 # on config values on the root Kconfig.
+
 if(NOT BOOTLOADER_BUILD)
 
     if(CONFIG_COMPILER_OPTIMIZATION_SIZE)