sim: bfin: add missing GPIO pin 15

Each GPIO block has 16 pins, and I only added 15 in the original
port list.  So add the missing 16th.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

sim/bfin/ChangeLog

@@ -1,3 +1,7 @@
+2011-04-11  Mike Frysinger  <vapier@gentoo.org>
+
+	* dv-bfin_gpio.c (bfin_gpio_ports): Add p15.
+
 2011-04-01  Mike Frysinger  <vapier@gentoo.org>
 
 	* dv-bfin_otp.c (bfin_otp_ports): Declare.

sim/bfin/dv-bfin_gpio.c

@@ -187,6 +187,7 @@ static const struct hw_port_descriptor bfin_gpio_ports[] =
   { "p12",   12, 0, input_port, },
   { "p13",   13, 0, input_port, },
   { "p14",   14, 0, input_port, },
+  { "p15",   15, 0, input_port, },
   { NULL, 0, 0, 0, },
 };