qcacld-3.0: Add Host Driver support for Chip Power stats debugfs

Implementation of Host driver support to collect chip power stats
from firmware and display the stats in
    "adb shell cat /sys/kernel/debug/wlan0/power_stats".

Change-Id: I19595ebf5a6870a0ee4d3cc2ff47d18eb24d213c
CRs-Fixed: 1045057

Kbuild

@@ -88,6 +88,11 @@ ifeq ($(KERNEL_BUILD), 0)
 	#Flag to enable Legacy Fast Roaming3(LFR3)
 	CONFIG_QCACLD_WLAN_LFR3 := y
 
+	#Enable Power debugfs feature only if debug_fs is enabled
+	ifeq ($(CONFIG_DEBUG_FS), y)
+	CONFIG_WLAN_POWER_DEBUGFS := y
+	endif
+
 	# JB kernel has CPU enablement patches, so enable
 	ifeq ($(CONFIG_ROME_IF),pci)
 		CONFIG_PRIMA_WLAN_11AC_HIGH_TP := y
@@ -1325,6 +1330,10 @@ ifeq ($(CONFIG_QCACLD_WLAN_LFR2),y)
 CDEFINES += -DWLAN_FEATURE_HOST_ROAM
 endif
 
+ifeq ($(CONFIG_WLAN_POWER_DEBUGFS), y)
+CDEFINES += -DWLAN_POWER_DEBUGFS
+endif
+
 ifeq ($(BUILD_DIAG_VERSION),1)
 CDEFINES += -DFEATURE_WLAN_DIAG_SUPPORT
 CDEFINES += -DFEATURE_WLAN_DIAG_SUPPORT_CSR