Disable build qt related packagegroups on mips64 with 64 bits userspace

Because qt could not be built on mips64 with 64 bits userspace, set
COMPATIBLE_HOST for qt related packagegroups to disable them on mips64
with 64 bit userspace too.

Signed-off-by: Kai Kang <kai.kang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
classes/insane: remove la2 check which no longer exists from ERROR_QA

This check was actually removed a very long time ago in
6656381714c5956f71ca634f5a5f4aa4661bbf7e, before we even changed the QA
checks to use names instead of numbers - the name was probably added
ERROR_QA mistakenly because it hadn't also been removed from the comment
listing the QA checks or the function that determined which ones were
errors.

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>