sh: traps: Add missing #include <asm/setup.h>

arch/sh/kernel/traps_32.c:735:6: warning: no previous prototype for ‘per_cpu_trap_init’ [-Wmissing-prototypes]
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Link: https://lore.kernel.org/r/a7750e57cc077ca6e27d0b9bd6b123d42894bc17.1709326528.git.geert+renesas@glider.beSigned-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>

arch/sh/kernel/traps_32.c

@@ -27,6 +27,7 @@
 #include <asm/alignment.h>
 #include <asm/fpu.h>
 #include <asm/kprobes.h>
+#include <asm/setup.h>
 #include <asm/traps.h>
 #include <asm/bl_bit.h>