qcacld-3.0: Remove badly formed GPIO -I switch

While reviewing build artifacts it was observed that the compiler
command line has a badly formed -I switch:
-I[path]/qcacld-3.0/cmn/-I[path]/cmn/target_if/gpio

Analysis of Kbuild shows that an already formed -I switch is being
incorrectly used as a directory, so remove that specific entry.

Change-Id: If59e8ee1d0f817bc8c56e74bc8e2fa9ef94a7eb3
CRs-Fixed: 3486972

Kbuild

@@ -1184,8 +1184,8 @@ UMAC_GPIO_DISP_DIR := $(WLAN_COMMON_ROOT)/$(UMAC_GPIO_DIR)/dispatcher/src
 UMAC_TARGET_GPIO_INC := -I$(WLAN_COMMON_INC)/target_if/gpio
 
 UMAC_GPIO_INC := -I$(WLAN_COMMON_INC)/$(UMAC_GPIO_DISP_INC_DIR) \
-			-I$(WLAN_COMMON_INC)/$(UMAC_GPIO_CORE_INC_DIR) \
-			-I$(WLAN_COMMON_INC)/$(UMAC_TARGET_GPIO_INC)
+			-I$(WLAN_COMMON_INC)/$(UMAC_GPIO_CORE_INC_DIR)
+
 ifeq ($(CONFIG_FEATURE_GPIO_CFG),y)
 UMAC_GPIO_OBJS := $(UMAC_GPIO_DISP_DIR)/wlan_gpio_tgt_api.o \
 		$(UMAC_GPIO_DISP_DIR)/wlan_gpio_ucfg_api.o \