For gfx11, the trap_handler fails to recognize a trap id 3 and report
the exception to the debugger if the debugger is attached.
This is because the 2nd level trap handler looks for the DEBUG_ENABLED
bit in ttmp13 instead of ttmp11. This bit is set by the 1st level trap
handler and is part of the 1st/2nd level trap handler ABI.
Change-Id: Ib36361f53d9bcbbed52320d8c3a9ab2c0b28c7cd
Lancelot SIX
6916ce358a