qcacld-3.0: Register os_if callback with the bearer switch state machine

Based on the new requirement, host driver needs to send the audio
transport switch request from host driver to user space, to
support this requirement, register os_if callback function with
bearer switch state machine

Change-Id: Ib94ff4d9876e79d984401262253602c975b0fb1e
CRs-Fixed: 3626952

Kbuild

@@ -1636,8 +1636,10 @@ MLME_OBJS += $(WFA_TGT_IF_DIR)/src/target_if_wfa_testcmd.o \
 
 ####### LL_SAP #######
 LL_SAP_DIR := components/umac/mlme/sap/ll_sap
+LL_SAP_OS_IF_DIR := os_if/mlme/sap/ll_sap
 
 LL_SAP_INC := -I$(WLAN_ROOT)/$(LL_SAP_DIR)/dispatcher/inc \
+		-I$(WLAN_ROOT)/$(LL_SAP_OS_IF_DIR)/inc
 
 MLME_INC += $(LL_SAP_INC)
 
@@ -1646,7 +1648,8 @@ MLME_OBJS += $(LL_SAP_DIR)/dispatcher/src/wlan_ll_sap_ucfg_api.o \
 		$(LL_SAP_DIR)/dispatcher/src/wlan_ll_sap_api.o \
 		$(LL_SAP_DIR)/core/src/wlan_ll_sap_main.o \
 		$(LL_SAP_DIR)/core/src/wlan_ll_lt_sap_main.o \
-		$(LL_SAP_DIR)/core/src/wlan_ll_lt_sap_bearer_switch.o
+		$(LL_SAP_DIR)/core/src/wlan_ll_lt_sap_bearer_switch.o \
+		$(LL_SAP_OS_IF_DIR)/src/os_if_ll_sap.o
 endif
 
 $(call add-wlan-objs,mlme,$(MLME_OBJS))