yet another host-side crosscompile fix

The host build portion using sys/msdos/Makefile1.cross) was failing because it
was attempting to compile the generated tile.o which is using hack.h.

gcc  -o../util/tilemap host_o/tilemap.o
A new ../src/tile.c has been created
gcc -c -O -I../include -I../sys/msdos -DDLB  -DUSE_TILES -DCROSSCOMPILE -DCROSSCOMPILE_HOST -ohost_o/tile.o ../src/tile.c
In file included from ../include/hack.h:201:0,
                 from ../src/tile.c:3:
../include/dungeon.h:70:5: error: unknown type name ‘lua_State’
     lua_State *themelua;   /* themerms compiled lua */
     ^
../sys/msdos/Makefile1.cross:286: recipe for target 'host_o/tile.o' failed
make: *** [host_o/tile.o] Error 1

I don't think think the tile.o is required on the host build build portion,
so it is probably an error in the Makefile. Try removing it.

sys/msdos/Makefile1.cross

@@ -148,7 +148,7 @@ TEXTIO2     = $(HOST_O)tiletex2.o $(HOST_O)tiletxt2.o $(HOST_O)drawing.o $(HOST_
 
 TILE_BMP    = $(DAT)/NHTILES.BMP
 
-TILEUTIL    = $(TILOBJ) $(TILE_BMP)
+TILEUTIL    = $(TILE_BMP)
 
 TILEFILES   = $(WSHR)/monsters.txt $(WSHR)/objects.txt $(WSHR)/other.txt
 
@@ -627,7 +627,7 @@ spotless: clean
 
 # src dependencies
 
-$(HOST_O)tile.o: tile.c $(HACK_H)
+#$(HOST_O)tile.o: tile.c $(HACK_H)
 $(HOST_O)vis_tab.o: vis_tab.c $(CONFIG_H) $(INCL)/vis_tab.h
 $(HOST_O)alloc.o: alloc.c $(CONFIG_H)
 $(HOST_O)dlb.o: dlb.c $(CONFIG_H) $(INCL)/dlb.h