sh: Enable GENERIC_HARDIRQS_NO__DO_IRQ for all SuperH machines

After the recent changes to switch SuperH board support over to irq_chip
it is now possible to set GENERIC_HARDIRQS_NO__DO_IRQ for all SuperH
boards.
Signed-off-by: NMatt Fleming <mjf@gentoo.org>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

arch/sh/Kconfig

@@ -58,8 +58,6 @@ config GENERIC_HARDIRQS
 
 config GENERIC_HARDIRQS_NO__DO_IRQ
 	def_bool y
-	depends on SUPERH32 && (!SH_DREAMCAST && !SH_SH4202_MICRODEV && \
-				!SH_7751_SYSTEMH && !HD64461)
 
 config GENERIC_IRQ_PROBE
 	def_bool y