Add Hygon Dhyana Support for PAPI

[hygonsoc]

Hygon Dhyana(family 18h) adopt similiar arch with AMD Family 17h, which is not supported in PAPI.

This patch add amd64 family 18h support for Hygon Dhyana.

• add libpfm4/lib/events/amd64_events_fam18h.h and libpfm4/lib/pfmlib_amd64_fam18h.c to enable pfm4 support
• add vendor checking to enable hygon support

Related Hygon kernel patch can be found on:

http://lkml.kernel.org/r/[e-mail]

testsuite run successfully on Hygon Dhyana platform.

[Heike Jagode]

This patch needs to be split into two:

(1) A patch for the changes proposed to libpfm, which needs to be send upsteam to the the libpfm developer (Stephane Eranian, [e-mail]).

(2) A patch for the changes proposed to PAPI. This should be added as a pull request once Stephane approved patch (1) to libpfm, and after we have merged the latest libpfm4 into the PAPI repo.

Thanks!

[hygonsoc]

Will submit patch to libpfm and later add pull request according to your suggestion

Thanks!