F14 mainboard: mptable update

F14 mainboard: mptable update

Add GNB internal graphic interrupt,
correct southbridge hd audio device interrupt. and remove the
dead code already commented out.

south_station, union_station, inagua, persimmon and e350m1 mainboard
are included herein.

Change-Id: Ic7618d80e0432ed0e22d1c16e1adb8ba6cea2e59
Signed-off-by: Kerry Sheh <shekairui@gmail.com>
Signed-off-by: Kerry Sheh <kerry.she@amd.com>
Reviewed-on: http://review.coreboot.org/451
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marcj303@gmail.com>