testsuite: Fix recent regression of g++.dg/other/sse2-pr85572-1.C

My sincere apologies for not noticing that g++.dg/other/sse2-pr85572-1.C
was FAILing with my recent ashrv2di patch.  I'm not sure how that happened.
Many thanks to Andrew Pinski for alerting me, and confirming that the
changes are harmless/beneficial.  Sorry again for the inconvenience.

2024-08-07  Roger Sayle  <roger@nextmovesoftware.com>

gcc/testsuite/ChangeLog
	* g++.dg/other/sse2-pr85572-1.C: Update expected output after
	my recent patch for ashrv2di3.  Now with one less instruction.