bfin: Check bfd_link_hash_indirect

Add bfd_link_hash_indirect check to check_relocs.  This fixed:

FAIL: ld-elf/pr26979a
FAIL: ld-elf/pr26979b
FAIL: Symbol export class test (final shared object)

	* elf32-bfin.c (bfin_check_relocs): Check bfd_link_hash_indirect.
	(bfinfdpic_check_relocs): Likewise.