mklibs-native: avoid failure on symbol provided by application

mklibs-native: avoid failure on symbol provided by application

Undefined symbols in a library can be provided by the application
that links to the library, such as `logsink' in libmultipath.so.0.
This fix checks the type of object in which the symbol is needed
and the existence of the symbol in application, when a symbol
cannot be provided by libraries. It prevents false alarm on absence
of symbols.

Signed-off-by: Yuanjie Huang <yuanjie.huang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>