MIPS: ralink: rename gpio_pinmux to rt_gpio_pinmux

Add proper namespacing to the variable.

Signed-off-by: John Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/5171/
diff --git a/arch/mips/ralink/rt305x.c b/arch/mips/ralink/rt305x.c
index 5d49a54..f1a6c33 100644
--- a/arch/mips/ralink/rt305x.c
+++ b/arch/mips/ralink/rt305x.c
@@ -114,7 +114,7 @@
 	rt_sysc_w32(t, SYSC_REG_SYSTEM_CONFIG);
 }
 
-struct ralink_pinmux gpio_pinmux = {
+struct ralink_pinmux rt_gpio_pinmux = {
 	.mode = mode_mux,
 	.uart = uart_mux,
 	.uart_shift = RT305X_GPIO_MODE_UART0_SHIFT,