qcacld-3.0: add hif_runtime_pm related files in Kbuild

Add hif_runtime_pmrelated files in Kbuild to be included
in the driver compilation.

Change-Id: Ifa392a517560a9391419da6733211f52aceb1170
CRs-Fixed: 2699439

Kbuild

@@ -1926,6 +1926,7 @@ endif
 
 HIF_COMMON_OBJS := $(WLAN_COMMON_ROOT)/$(HIF_DIR)/src/ath_procfs.o \
 		   $(WLAN_COMMON_ROOT)/$(HIF_DIR)/src/hif_main.o \
+		   $(WLAN_COMMON_ROOT)/$(HIF_DIR)/src/hif_runtime_pm.o \
 		   $(WLAN_COMMON_ROOT)/$(HIF_DIR)/src/hif_exec.o
 
 ifneq ($(CONFIG_LITHIUM), y)
@@ -2534,11 +2535,9 @@ endif
 cppflags-$(CONFIG_NL80211_TESTMODE) += -DWLAN_NL80211_TESTMODE
 
 # Flag to enable bus auto suspend
-ifeq ($(CONFIG_HIF_PCI), y)
 ifeq ($(CONFIG_BUS_AUTO_SUSPEND), y)
 cppflags-y += -DFEATURE_RUNTIME_PM
 endif
-endif
 
 ifeq ($(CONFIG_ICNSS), y)
 ifeq ($(CONFIG_SNOC_FW_SIM), y)