[ARM] replace remaining __FUNCTION__ occurrences

__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-imx/irq.c b/arch/arm/mach-imx/irq.c
index a7465db..e6695c4 100644
--- a/arch/arm/mach-imx/irq.c
+++ b/arch/arm/mach-imx/irq.c
@@ -160,21 +160,21 @@
 static void
 imx_gpio_ack_irq(unsigned int irq)
 {
-	DEBUG_IRQ("%s: irq %d\n", __FUNCTION__, irq);
+	DEBUG_IRQ("%s: irq %d\n", __func__, irq);
 	ISR(IRQ_TO_REG(irq)) = 1 << ((irq - IRQ_GPIOA(0)) % 32);
 }
 
 static void
 imx_gpio_mask_irq(unsigned int irq)
 {
-	DEBUG_IRQ("%s: irq %d\n", __FUNCTION__, irq);
+	DEBUG_IRQ("%s: irq %d\n", __func__, irq);
 	IMR(IRQ_TO_REG(irq)) &= ~( 1 << ((irq - IRQ_GPIOA(0)) % 32));
 }
 
 static void
 imx_gpio_unmask_irq(unsigned int irq)
 {
-	DEBUG_IRQ("%s: irq %d\n", __FUNCTION__, irq);
+	DEBUG_IRQ("%s: irq %d\n", __func__, irq);
 	IMR(IRQ_TO_REG(irq)) |= 1 << ((irq - IRQ_GPIOA(0)) % 32);
 }