qcacld-3.0: Register fw down callback with QDF

Register fw down callback with QDF such that new UMAC
components can check if FW is down or not.

Change-Id: I86346db08ced59bb5f77c640eb7f9257cc0bb42c
CRs-Fixed: 2203498
diff --git a/Kbuild b/Kbuild
index 105b869..e5a376a 100644
--- a/Kbuild
+++ b/Kbuild
@@ -835,9 +835,9 @@
 		$(QDF_LINUX_OBJ_DIR)/qdf_crypto.o \
 		$(QDF_LINUX_OBJ_DIR)/qdf_trace.o \
 		$(QDF_OBJ_DIR)/qdf_parse.o \
+		$(QDF_OBJ_DIR)/qdf_platform.o \
 		$(QDF_OBJ_DIR)/qdf_str.o \
 		$(QDF_OBJ_DIR)/qdf_types.o \
-		$(QDF_OBJ_DIR)/qdf_util.o
 
 ifeq ($(CONFIG_WLAN_DEBUGFS), y)
 QDF_OBJS += $(QDF_LINUX_OBJ_DIR)/qdf_debugfs.o