parselogs.py: Ignore Skylake graphics firmware load errors on genericx86-64
These errors can't be fixed without adding the firmware to the initramfs
and building it into the kernel, which we don't want to do for
genericx86-64. Since graphics still work acceptably without the firmware
blobs, just ignore the errors for that MACHINE.
Signed-off-by: California Sullivan <california.l.sullivan@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
