lisa.analysis.functions: Handle already-resolved names in df_resolve_ksym()
lisa.analysis.functions: Handle already-resolved names in df_resolve_ksym()

If the function names have already been resolved in the column that is
supposed to hold the address, just copy that column to the one supposed
to hold the function name.

This avoids failure when the parser itself is able to resolve function
names.

ARM-software/lisa,ARM-software/lisa,ARM-software/lisa,ARM-software/lisa,credp/lisa,credp/lisa,credp/lisa,credp/lisa