alpha: remove remaining __FUNCTION__ occurrences

__FUNCTION__ is gcc-specific, use __func__

The change in pci-iommu,c should be safe as arena has not been assigned
when we get to this point.

Some were within #if 0 blocks, have changed them and left the blocks
as they appear to be debugging infrastructure.

A #define FN __FUNCTION__ was removed and occurances of FN were replaced
with __func__ as well.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/alpha/kernel/sys_sable.c b/arch/alpha/kernel/sys_sable.c
index 906019c..99a7f19 100644
--- a/arch/alpha/kernel/sys_sable.c
+++ b/arch/alpha/kernel/sys_sable.c
@@ -454,7 +454,7 @@
 	spin_unlock(&sable_lynx_irq_lock);
 #if 0
 	printk("%s: mask 0x%lx bit 0x%x irq 0x%x\n",
-	       __FUNCTION__, mask, bit, irq);
+	       __func__, mask, bit, irq);
 #endif
 }
 
@@ -470,7 +470,7 @@
 	spin_unlock(&sable_lynx_irq_lock);
 #if 0
 	printk("%s: mask 0x%lx bit 0x%x irq 0x%x\n",
-	       __FUNCTION__, mask, bit, irq);
+	       __func__, mask, bit, irq);
 #endif
 }
 
@@ -524,7 +524,7 @@
 	irq = sable_lynx_irq_swizzle->mask_to_irq[bit];
 #if 0
 	printk("%s: vector 0x%lx bit 0x%x irq 0x%x\n",
-	       __FUNCTION__, vector, bit, irq);
+	       __func__, vector, bit, irq);
 #endif
 	handle_irq(irq);
 }