microblaze: add missing forward declaration

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

diff --git a/arch/microblaze/include/asm/pgtable.h b/arch/microblaze/include/asm/pgtable.h
index 3042eb98bb56a13d02407671ba6a62a529fab546..e4ea2ec3642f065a6d71041704e6d310369127dd 100644 (file)
--- a/arch/microblaze/include/asm/pgtable.h
+++ b/arch/microblaze/include/asm/pgtable.h
@@ -336,6 +336,7 @@ static inline void set_pte(pte_t *ptep, pte_t pte)
 }
 
 #define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
+struct vm_area_struct;
 static inline int ptep_test_and_clear_young(struct vm_area_struct *vma,
                unsigned long address, pte_t *ptep)
 {