of/fdt.c: asm/setup.h included twice

drivers/of/fdt.c included 'asm/setup.h' twice, remove the duplicate.
Signed-off-by: NDanny Kukawka <danny.kukawka@bisect.de>
Signed-off-by: NRob Herring <rob.herring@calxeda.com>

drivers/of/fdt.c

@@ -23,7 +23,6 @@
 #include <asm/machdep.h>
 #endif /* CONFIG_PPC */
 
-#include <asm/setup.h>
 #include <asm/page.h>
 
 char *of_fdt_get_string(struct boot_param_header *blob, u32 offset)