PR27984: Adjust the address so dwfl_module_addrinfo finds correct function name

PR27984: Adjust the address so dwfl_module_addrinfo finds correct function name

PR27984 discovered that the logic to determine when a location was
part of a partially inlined function was not operating correctly for
shared libraries.  The existing systemtap.base/partial-inline.exp
verified that the test worked for executables, but shared libraries
include a non-zero bias that needs to be added in. Added code to get
the required bias and add it to the address so the correct name is
returned by dwfl_module_addrinfo.