insane.bbclass: avoid QA errors for n32 kernel

insane.bbclass: avoid QA errors for n32 kernel

A series of commits had been integrated to avoid qa checking code
throwing the bitsize not matched error for x32 kernel files, the
same logic is also needed by n32 kernel which was not addressed in
that series.

This commit extends the condition for n32 kernel files.

(From OE-Core rev: 6a169be15439f12169869ecef890594796e70e58)

Signed-off-by: Ming Liu <ming.liu@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>