[gdb/testsuite] Regenerate dw2-restrict.S

[gdb/testsuite] Regenerate dw2-restrict.S

When running gdb.dwarf2/dw2-restrict.exp with board cc-with-dwz, we run into:
...
dwz: dw2-restrict: DW_AT_stmt_list not DW_FORM_sec_offset or DW_FORM_data4
...

The problem is that the DW_AT_stmt_list is encoded using DW_FORM_addr, while
DW_FORM_sec_offset or DW_FORM_data4 would be appropriate.  The test-case uses
a dw2-restrict.S which was generated using clang 2.9, which contained a bug
( https://bugs.llvm.org/show_bug.cgi?id=9995 ) causing this problem.

Fix this by regenerating using clang 5.0.1.

Tested on x86_64-linux.

gdb/testsuite/ChangeLog:

2019-06-25  Tom de Vries  <tdevries@suse.de>

	PR testsuite/24727
	* gdb.dwarf2/dw2-restrict.S: Regenerate using clang 5.0.1.