ARM: iomux-imx31: allow pin_list to be const

This fixes the following warning in a mx3_defconfig build:

	arch/arm/mach-mx3/mach-bug.c: In function 'bug_board_init':
	arch/arm/mach-mx3/mach-bug.c:47: warning: passing argument 1 of 'mxc_iomux_setup_multiple_pins' discards qualifiers from pointer target type

While at it remove some useless consts from unsigned int arguments.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arch/arm/mach-mx3/iomux-imx31.c

@@ -97,7 +97,7 @@ EXPORT_SYMBOL(mxc_iomux_set_pad);
  * 	- reserves the pin so that it is not claimed by another driver
  * 	- setups the iomux according to the configuration
  */
-int mxc_iomux_alloc_pin(const unsigned int pin, const char *label)
+int mxc_iomux_alloc_pin(unsigned int pin, const char *label)
 {
 	unsigned pad = pin & IOMUX_PADNUM_MASK;
 
@@ -118,10 +118,10 @@ int mxc_iomux_alloc_pin(const unsigned int pin, const char *label)
 }
 EXPORT_SYMBOL(mxc_iomux_alloc_pin);
 
-int mxc_iomux_setup_multiple_pins(unsigned int *pin_list, unsigned count,
+int mxc_iomux_setup_multiple_pins(const unsigned int *pin_list, unsigned count,
 		const char *label)
 {
-	unsigned int *p = pin_list;
+	const unsigned int *p = pin_list;
 	int i;
 	int ret = -EINVAL;
 
@@ -139,7 +139,7 @@ setup_error:
 }
 EXPORT_SYMBOL(mxc_iomux_setup_multiple_pins);
 
-void mxc_iomux_release_pin(const unsigned int pin)
+void mxc_iomux_release_pin(unsigned int pin)
 {
 	unsigned pad = pin & IOMUX_PADNUM_MASK;
 
@@ -148,9 +148,9 @@ void mxc_iomux_release_pin(const unsigned int pin)
 }
 EXPORT_SYMBOL(mxc_iomux_release_pin);
 
-void mxc_iomux_release_multiple_pins(unsigned int *pin_list, int count)
+void mxc_iomux_release_multiple_pins(const unsigned int *pin_list, int count)
 {
-	unsigned int *p = pin_list;
+	const unsigned int *p = pin_list;
 	int i;
 
 	for (i = 0; i < count; i++) {

arch/arm/plat-mxc/include/mach/iomux-mx3.h

@@ -112,12 +112,12 @@ enum iomux_gp_func {
  * 	- setups the iomux according to the configuration
  * 	- if the pin is configured as a GPIO, we claim it through kernel gpiolib
  */
-int mxc_iomux_alloc_pin(const unsigned int pin, const char *label);
+int mxc_iomux_alloc_pin(unsigned int pin, const char *label);
 /*
  * setups mutliple pins
  * convenient way to call the above function with tables
  */
-int mxc_iomux_setup_multiple_pins(unsigned int *pin_list, unsigned count,
+int mxc_iomux_setup_multiple_pins(const unsigned int *pin_list, unsigned count,
 		const char *label);
 
 /*
@@ -126,12 +126,12 @@ int mxc_iomux_setup_multiple_pins(unsigned int *pin_list, unsigned count,
  * 	- frees the GPIO if the pin was configured as GPIO
  * 	- DOES NOT reconfigure the IOMUX in its reset state
  */
-void mxc_iomux_release_pin(const unsigned int pin);
+void mxc_iomux_release_pin(unsigned int pin);
 /*
  * releases multiple pins
  * convenvient way to call the above function with tables
  */
-void mxc_iomux_release_multiple_pins(unsigned int *pin_list, int count);
+void mxc_iomux_release_multiple_pins(const unsigned int *pin_list, int count);
 
 /*
  * This function enables/disables the general purpose function for a particular