gas testsuite: adjust recently added tests for hppa

gas testsuite: adjust recently added tests for hppa

Some hppa gas targets treat anything starting in the first column as a
label, so directives can't start there.  Also, binutils_assemble and
run_dump_test cleverly edit test source to suit the hppa .comm
directive which has a different syntax to most targets.  The editing
means we can't match source file names in dumps.  Finally, hppa gas
complains if instructions are emitted without a ".text" or similar
directive.

	* testsuite/gas/all/pr27381.err: Don't match source file name.
	* testsuite/gas/all/pr27381.s: Don't start directive in first column.
	* testsuite/gas/all/pr27384.err: Don't match source file name.
	Adjust line number.
	* testsuite/gas/all/pr27384.s: Add ".text" directive.
	* testsuite/gas/elf/pr27355.err: Don't match source file name.