[PATCH] mips: add unknown page size string

This patch had fixed the following warning.

arch/mips/lib-32/dump_tlb.c: In function 'dump_tlb':
arch/mips/lib-32/dump_tlb.c:69: warning: control may reach end of non-void function 'msk2str' being inlined

This patch adds return value, when page size is not match.
Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/mips/lib-32/dump_tlb.c

@@ -32,6 +32,8 @@ static inline const char *msk2str(unsigned int mask)
 	case PM_256M:	return "256Mb";
 #endif
 	}
+
+	return "unknown";
 }
 
 #define BARRIER()					\

arch/mips/lib-64/dump_tlb.c

@@ -32,6 +32,8 @@ static inline const char *msk2str(unsigned int mask)
 	case PM_256M:	return "256Mb";
 #endif
 	}
+
+	return "unknown";
 }
 
 #define BARRIER()					\