ld: testsuite: Skip "Run with libpr19553c.so" test on Solaris

The

FAIL: Run with libpr19553c.so

test FAILs on Solaris (32 and 64-bit, sparc and x86):

Running: tmpdir/pr19553c > tmpdir/pr19553c.out
diff tmpdir/pr19553c.out /vol/src/gnu/binutils/hg/master/local/ld/testsuite/ld-elf/pr19553c.out
1c1
< pr19553b
---
> pr19553c
child process exited abnormally

The test uses .symver, resulting in versioned symbols which the Solaris
ld.so.1 doesn't support and never will.  Running it with LD_DEBUG=all
shows

26493: 1: symbol=foo;  lookup in file=tmpdir/pr19553c  [ ELF ]
26493: 1: symbol=foo;  lookup in file=tmpdir/libpr19553c.so  [ ELF ]
26493: 1: symbol=foo;  skipping entry in file=tmpdir/libpr19553c.so, index[7], version=FOO, due to GNU version hidden bit
26493: 1: symbol=foo;  continuing lookup in file=tmpdir/libpr19553c.so  [ ELF ]
26493: 1: symbol=foo;  lookup in file=tmpdir/libpr19553b.so  [ ELF ]
26493: 1: binding file=tmpdir/pr19553c to file=tmpdir/libpr19553b.so: symbol 'foo'

so this patch skips the test.

2025-07-25  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	ld:
	* testsuite/ld-elf/indirect.exp (Run with libpr19553c.so):
	Skip on *-*-solaris2*.