[PATCH] arch/unicore32/mm/alignment.c: include "asm/pgtable.h" to avoid compiling error

[Chen Gang <gang.chen.5i5j@gmail.com>]

Need include "asm/pgtable.h" to include "asm-generic/pgtable-nopmd.h",
so can let 'pmd_t' defined. The related error with allmodconfig:

    CC      arch/unicore32/mm/alignment.o
  In file included from arch/unicore32/mm/alignment.c:24:
  arch/unicore32/include/asm/tlbflush.h:135: error: expected ‘)’ before ‘*’ token
  arch/unicore32/include/asm/tlbflush.h:154: error: expected ‘)’ before ‘*’ token
  In file included from arch/unicore32/mm/alignment.c:27:
  arch/unicore32/mm/mm.h:15: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token
  arch/unicore32/mm/mm.h:20: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token
  arch/unicore32/mm/mm.h:25: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token
  make[1]: *** [arch/unicore32/mm/alignment.o] Error 1
  make: *** [arch/unicore32/mm] Error 2


Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
---
 arch/unicore32/mm/alignment.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/unicore32/mm/alignment.c b/arch/unicore32/mm/alignment.c
index de7dc5f..24e8360 100644
--- a/arch/unicore32/mm/alignment.c
+++ b/arch/unicore32/mm/alignment.c
@@ -21,6 +21,7 @@
 #include <linux/sched.h>
 #include <linux/uaccess.h>
 
+#include <asm/pgtable.h>
 #include <asm/tlbflush.h>
 #include <asm/unaligned.h>
 
-- 
1.7.9.5