Move "fail to add MMCONFIG..." to qemux86_common as we started to also see it on
x86-64 with Linux 4.1.
Add "can't claim BAR..." to qemux86_common.
Generalise "Failed to access perfctr MSR" as the MSR number can change.
(From OE-Core rev: 312417c182267584141d4ba62458bdd1d9d9ccb9)
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>