dataservices: Makefile changes to enable CLANG

Update the makefiles to enable CLANG compilation. Also fix the
corresponding warnings and errors caused by CLANG enablement.

CRs-Fixed: 971746
Change-Id: I16dd64aaf219a59aba6a612002dab78c877cb8b9

datatop/src/Android.mk

@@ -26,6 +26,7 @@ LOCAL_CFLAGS += -D _BSD_SOURCE
 
 LOCAL_C_INCLUDES := $(LOCAL_PATH)
 
+LOCAL_CLANG := true
 LOCAL_MODULE := datatop
 LOCAL_MODULE_TAGS := optional
 

datatop/src/datatop.c

@@ -93,7 +93,7 @@ int dtop_poll_periodically(struct dtop_linked_list *dpg_list, FILE *fw)
 	struct timeval tv, timeout;
 	fd_set rfds;
 	time_t curtime, endtime;
-	int inp, quit;
+	int inp, quit = 0;
 	struct dtop_linked_list *curr_ptr = dpg_list;
 	struct dtop_data_point_gatherer *dpset;
 	struct timeval ftime, itime, polltime;

rmnetctl/src/Android.mk

@@ -12,7 +12,7 @@ LOCAL_C_INCLUDES += $(LOCAL_PATH)
 LOCAL_C_INCLUDES += $(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ/usr/include
 LOCAL_ADDITIONAL_DEPENDENCIES := $(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ/usr
 
-
+LOCAL_CLANG := true
 LOCAL_MODULE := librmnetctl
 LOCAL_MODULE_TAGS := optional
 LOCAL_PRELINK_MODULE := false

sockev/src/Android.mk

@@ -8,6 +8,7 @@ LOCAL_CFLAGS := -Wall -Werror
 LOCAL_C_INCLUDES := $(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ/usr/include
 LOCAL_ADDITIONAL_DEPENDENCIES := $(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ/usr
 
+LOCAL_CLANG := true
 LOCAL_MODULE := sockev
 LOCAL_MODULE_TAGS := optional