qcacld-3.0: Add a sysfs replacement for gtxBWMask

As part of WEXT replacement, replace gtx_bw_mask with a sysfs file.

file path: /sys/class/net/wlanxx/gtx_bw_mask
        wlanxx is adapter name

example: echo 1 > gtx_bw_mask

Change-Id: I40c0f611ca221c91c59d9a3f60927f841385c469
CRs-Fixed: 2686762

Kbuild

@@ -339,6 +339,9 @@ endif
 ifeq ($(CONFIG_WLAN_TXRX_FW_ST_RST), y)
 HDD_OBJS += $(HDD_SRC_DIR)/wlan_hdd_sysfs_txrx_fw_st_rst.o
 endif
+ifeq ($(CONFIG_WLAN_GTX_BW_MASK), y)
+HDD_OBJS += $(HDD_SRC_DIR)/wlan_hdd_sysfs_gtx_bw_mask.o
+endif
 endif
 
 ifeq ($(CONFIG_QCACLD_FEATURE_FW_STATE), y)
@@ -2571,6 +2574,7 @@ cppflags-$(CONFIG_WLAN_GET_TX_STBC) += -DCONFIG_WLAN_GET_TX_STBC
 cppflags-$(CONFIG_WLAN_GET_STATS) += -DCONFIG_WLAN_GET_STATS
 cppflags-$(CONFIG_WLAN_SET_WLAN_DBG) += -DCONFIG_WLAN_SET_WLAN_DBG
 cppflags-$(CONFIG_WLAN_TXRX_FW_ST_RST) += -DCONFIG_WLAN_TXRX_FW_ST_RST
+cppflags-$(CONFIG_WLAN_GTX_BW_MASK) += -DCONFIG_WLAN_GTX_BW_MASK
 cppflags-$(CONFIG_WLAN_SET_SCAN_CFG) += -DCONFIG_WLAN_SET_SCAN_CFG
 cppflags-$(CONFIG_WLAN_SET_MON_CHAN) += -DCONFIG_WLAN_SET_MON_CHAN
 cppflags-$(CONFIG_WLAN_SET_RADAR) += -DCONFIG_WLAN_SET_RADAR