lirc_rpi: Delete vestigial gpio_in_pull parameter

BugLink: https://bugs.launchpad.net/bugs/1691407

The RPi GPIO no longer support run-time "pull" settings - one should
Device Tree and pinctrl instead - so remove the parameter to avoid
confusion.

See: raspberrypi/linux#1711

Signed-off-by: Phil Elwell <[email protected]>

(cherry picked from commit 7f7add4fb95315a58acae146a0eef2448f711390)
Signed-off-by: Paolo Pisati <[email protected]>
Acked-by: Colin King <[email protected]>
Acked-by: Stefan Bader <[email protected]>
Signed-off-by: Thadeu Lima de Souza Cascardo <[email protected]>

drivers/staging/media/lirc/lirc_rpi.c

@@ -64,8 +64,6 @@
 
 /* set the default GPIO input pin */
 static int gpio_in_pin = 18;
-/* set the default pull behaviour for input pin */
-static int gpio_in_pull = BCM2708_PULL_DOWN;
 /* set the default GPIO output pin */
 static int gpio_out_pin = 17;
 /* enable debugging messages */
@@ -716,10 +714,6 @@ module_param(gpio_in_pin, int, S_IRUGO);
 MODULE_PARM_DESC(gpio_in_pin, "GPIO input pin number of the BCM processor."
 		 " (default 18");
 
-module_param(gpio_in_pull, int, S_IRUGO);
-MODULE_PARM_DESC(gpio_in_pull, "GPIO input pin pull configuration."
-		 " (0 = off, 1 = up, 2 = down, default down)");
-
 module_param(sense, int, S_IRUGO);
 MODULE_PARM_DESC(sense, "Override autodetection of IR receiver circuit"
 		 " (0 = active high, 1 = active low )");