[PATCH] ppc64: Add missing include

inline pmac_call_feature references ppc_md so include asm/machdep.h
in asm/pmac_feature.h

Signed-off-by: Milton Miller <[e-mail]>
Signed-off-by: Anton Blanchard <[e-mail]>
Signed-off-by: Paul Mackerras <[e-mail]>

include/asm-ppc/pmac_feature.h

···
 #define __PPC_ASM_PMAC_FEATURE_H
 
 #include <asm/macio.h>
+#include <asm/machdep.h>
 
 /*
  * Known Mac motherboard models