[ARM] 3739/1: genirq updates: irq_chip, add and use irq_chip.name

Patch from David Brownell

ARM genirq cleanups/updates:

    - Start switching platforms to newer APIs
        * use "irq_chip" name, not "irqchip"
        * providing irq_chip.name

    - Show irq_chip.name in /proc/interrupts, like on x86.

This update a bit more than half of the ARM code.  The irq_chip.name
values were chosen to match docs (if I have them) or be otherwise
obvious ("FPGA", "CPLD", or matching the code).

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-integrator/integrator_ap.c

@@ -161,7 +161,8 @@ static void sc_unmask_irq(unsigned int irq)
 	writel(1 << irq, VA_IC_BASE + IRQ_ENABLE_SET);
 }
 
-static struct irqchip sc_chip = {
+static struct irq_chip sc_chip = {
+	.name	= "SC",
 	.ack	= sc_mask_irq,
 	.mask	= sc_mask_irq,
 	.unmask = sc_unmask_irq,