microblaze-linux XPASS ld-elf/var1

microblaze-linux uses the standard ELF script, microblaze-elf its own
script lacking an input section pattern needed to make this test pass.
Add the missing pattern for .data, in line with most other sections
that do have .* patterns.

	* scripttempl/elfmicroblaze.sc (.data): Add .data.* entry.
	* testsuite/ld-elf/var1.d: Don't xfail microblaze.