sparc64 Kbuild: apb.h and bbc.h should not be exported to userspace

Signed-off-by: David S. Miller <davem@davemloft.net>

include/asm-sparc64/Kbuild

@@ -4,9 +4,7 @@ ALTARCH := sparc
 ARCHDEF := defined __sparc__ && defined __arch64__
 ALTARCHDEF := defined __sparc__ && !defined __arch64__
 
-header-y += apb.h
 header-y += asi.h
-header-y += bbc.h
 header-y += bpp.h
 header-y += display7seg.h
 header-y += envctrl.h