Hexagon: clean up generic headers in Kbuild

Signed-off-by: Richard Kuo <rkuo@codeaurora.org>

arch/hexagon/include/asm/Kbuild

@@ -25,7 +25,6 @@ generic-y += kdebug.h
 generic-y += kmap_types.h
 generic-y += local64.h
 generic-y += local.h
-generic-y += local.h
 generic-y += mman.h
 generic-y += msgbuf.h
 generic-y += pci.h
@@ -41,6 +40,7 @@ generic-y += sembuf.h
 generic-y += shmbuf.h
 generic-y += shmparam.h
 generic-y += siginfo.h
+generic-y += sizes.h
 generic-y += socket.h
 generic-y += sockios.h
 generic-y += statfs.h