hexagon: vdso: Fix build failure

Hexagon images fail to build with the following error.

arch/hexagon/kernel/vdso.c:57:3: error: use of undeclared identifier 'name'
name = "[vdso]",
^

Add the missing '.' to fix the problem.

Fixes: 497258dfafcc ("mm: remove legacy install_special_mapping() code")
Cc: Linus Torvalds <[e-mail]>
Signed-off-by: Guenter Roeck <[e-mail]>
Reviewed-by: Brian Cain <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

arch/hexagon/kernel/vdso.c

···
 	struct vm_area_struct *vma;
 	struct mm_struct *mm = current->mm;
 	static struct vm_special_mapping vdso_mapping = {
-		name = "[vdso]",
+		.name = "[vdso]",
 	};
 
 	if (mmap_write_lock_killable(mm))