testsuite: Allow for non-SECTION_MERGE systems in gcc.dg/pr115066.c [PR115066]

testsuite: Allow for non-SECTION_MERGE systems in gcc.dg/pr115066.c [PR115066]

gcc.dg/pr115066.c currently FAILs on Solaris/SPARC with the native as:

FAIL: gcc.dg/pr115066.c scan-assembler \\\\.byte\\\\t0xb\\\\t# Define macro strx

Instead of the expected

	.byte   0xb     ! Define macro strx

the assembler output contains

	.byte   0x1     ! Define macro

Apparently this happens because the Solaris as/ld combo doesn't support
SHF_MERGE.

While I initially meant to just skip the test on sparc*-*-solaris2* && !gas,
Tom suggested to allow for both forms instead, which is what his patch
does.

Tested on sparc-sun-solaris2.11 and i386-pc-solaris2.11 (as and gas
each) and x86_64-pc-linux-gnu.

2024-05-21  Tom de Vries  <tdevries@suse.de>

	gcc/testsuite:
	PR debug/115066
	* gcc.dg/pr115066.c (scan-assembler): Allow for alternative form
	of Define macro.