sh: Enable HAVE_ARCH_TRACEHOOK.

Now that the rest of the support requirements are out of the way, finally
enable support for tracehook.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/Kconfig

@@ -23,6 +23,7 @@ config SUPERH32
 	def_bool !SUPERH64
 	select HAVE_KPROBES
 	select HAVE_KRETPROBES
+	select HAVE_ARCH_TRACEHOOK if (!SH_FPU && !SH_DSP)
 
 config SUPERH64
 	def_bool y if CPU_SH5