qcacld-3.0: Add dummy.o to kbuild

Add a file to contain dummy functions for hif.

Change-Id: Ief06d0913eac0a38d6c188460925c6a7ca989f85
CRs-Fixed: 986480
diff --git a/Kbuild b/Kbuild
index ee0fb4e..21ea0a9 100755
--- a/Kbuild
+++ b/Kbuild
@@ -752,6 +752,7 @@
 HIF_SNOC_OBJS := $(WLAN_COMMON_ROOT)/$(HIF_SNOC_DIR)/if_snoc.o
 
 HIF_OBJS += $(WLAN_COMMON_ROOT)/$(HIF_DISPATCHER_DIR)/multibus.o
+HIF_OBJS += $(WLAN_COMMON_ROOT)/$(HIF_DISPATCHER_DIR)/dummy.o
 
 ifeq ($(CONFIG_HIF_PCI), 1)
 HIF_OBJS += $(HIF_PCIE_OBJS)