ARM: PXA: Z2: Fix libertas init/tear down sequences

GPIO15 seems to be not related to WiFi, so don't touch it.

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
diff --git a/arch/arm/mach-pxa/include/mach/z2.h b/arch/arm/mach-pxa/include/mach/z2.h
index 8835c16..7b0f71e 100644
--- a/arch/arm/mach-pxa/include/mach/z2.h
+++ b/arch/arm/mach-pxa/include/mach/z2.h
@@ -25,8 +25,7 @@
 #define	GPIO98_ZIPITZ2_LID_BUTTON	98
 
 /* Libertas GSPI8686 WiFi */
-#define	GPIO14_ZIPITZ2_WIFI_RESET	14
-#define	GPIO15_ZIPITZ2_WIFI_POWER	15
+#define	GPIO14_ZIPITZ2_WIFI_POWER	14
 #define	GPIO24_ZIPITZ2_WIFI_CS		24
 #define	GPIO36_ZIPITZ2_WIFI_IRQ		36