[PATCH] powerpc/mm: ptdump: Add missing include <asm/vio.h>

[YueHaibing]

gcc build fails:

arch/powerpc/mm/ptdump/hashpagetable.c: In function ‘pseries_find’:
arch/powerpc/mm/ptdump/hashpagetable.c:262:18: error: ‘H_SUCCESS’ undeclared (first use in this function); did you mean ‘FL_ACCESS’?
   if (lpar_rc != H_SUCCESS)
                  ^~~~~~~~~
                  FL_ACCESS

Reported-by: Hulk Robot <hulkci at huawei.com>
Fixes: 65e701b2d2a8 ("powerpc/ptdump: drop non vital #ifdefs")
Signed-off-by: YueHaibing <yuehaibing at huawei.com>
---
 arch/powerpc/mm/ptdump/hashpagetable.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/mm/ptdump/hashpagetable.c b/arch/powerpc/mm/ptdump/hashpagetable.c
index b6ed9578382f..8ea5f9a3b658 100644
--- a/arch/powerpc/mm/ptdump/hashpagetable.c
+++ b/arch/powerpc/mm/ptdump/hashpagetable.c
@@ -20,6 +20,7 @@
 #include <asm/page.h>
 #include <asm/pgalloc.h>
 #include <asm/plpar_wrappers.h>
+#include <asm/vio.h>
 #include <linux/memblock.h>
 #include <asm/firmware.h>
 
-- 
2.17.1