testsuite: Fix asm-goto-with-outputs tests; limit to lra targets

These tests spuriously lacked a "lra" limiter.  Code using
"asm goto" with outputs gets a:
 error: the target does not support 'asm goto' with outputs in 'asm'
compilation error when compiled for a non-LRA target.  Limit
to LRA targets as other asm-goto-with-outputs tests.

	* gcc.dg/torture/pr100398.c: Limit to lra targets.
	* gcc.dg/pr100590.c: Ditto.