[IA64] remove remaining __FUNCTION__ occurrences

__FUNCTION__ is gcc-specific, use __func__

Long lines have been kept where they exist, some small spacing changes
have been done.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
diff --git a/arch/ia64/hp/sim/simserial.c b/arch/ia64/hp/sim/simserial.c
index ef252df..eb0c32a 100644
--- a/arch/ia64/hp/sim/simserial.c
+++ b/arch/ia64/hp/sim/simserial.c
@@ -1000,7 +1000,7 @@
 		if (!state->irq) {
 			if ((rc = assign_irq_vector(AUTO_ASSIGN)) < 0)
 				panic("%s: out of interrupt vectors!\n",
-				      __FUNCTION__);
+				      __func__);
 			state->irq = rc;
 			ia64_ssc_connect_irq(KEYBOARD_INTR, state->irq);
 		}