MIPS/IRQCHIP: Move Ingenic SoC intc driver to drivers/irqchip

Move the driver for Ingenic SoC interrupt controllers into
drivers/irqchip where it belongs.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Brian Norris <computersforpeace@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/10147/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig
index 2b7531e..746daf3 100644
--- a/drivers/irqchip/Kconfig
+++ b/drivers/irqchip/Kconfig
@@ -163,3 +163,8 @@
 config MIPS_GIC
 	bool
 	select MIPS_CM
+
+config INGENIC_IRQ
+	bool
+	depends on MACH_INGENIC
+	default y