sh: remove obsolete hw_interrupt_type

Impact: cleanup

Convert the last remaining users to struct irq_chip and remove the
define.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/kernel/cpu/irq/imask.c

@@ -39,7 +39,7 @@ static unsigned int startup_imask_irq(unsigned int irq)
 	return 0; /* never anything pending */
 }
 
-static struct hw_interrupt_type imask_irq_type = {
+static struct irq_chip imask_irq_type = {
 	.typename = "SR.IMASK",
 	.startup = startup_imask_irq,
 	.shutdown = shutdown_imask_irq,

arch/sh/kernel/cpu/irq/intc-sh5.c

@@ -84,7 +84,7 @@ static void disable_intc_irq(unsigned int irq);
 static void mask_and_ack_intc(unsigned int);
 static void end_intc_irq(unsigned int irq);
 
-static struct hw_interrupt_type intc_irq_type = {
+static struct irq_chip intc_irq_type = {
 	.typename = "INTC",
 	.startup = startup_intc_irq,
 	.shutdown = shutdown_intc_irq,