m32c.c (m32c_expand_insv): Check that the value we're inserting is a singlt-bit constant.

* config/m32c/m32c.c (m32c_expand_insv): Check that the value
we're inserting is a singlt-bit constant.

Co-Authored-By: DJ Delorie <dj@redhat.com>

From-SVN: r114250