-Fixed warnings related to implicit delcaration of strcmp() function.
Error: missing #include<string.h> from the files which are using the function strcmp
Change-Id: Ia8c3fec21b7f622543b646063ec9718f5b1cba83
#include <stdio.h>
#include <sensor_internal.h>
#include <stdbool.h>
+#include <string.h>
static GMainLoop *mainloop;
#include <stdio.h>
#include <sensor_internal.h>
#include <stdbool.h>
+#include <string.h>
static GMainLoop *mainloop;
#include <stdio.h>
#include <sensor_internal.h>
#include <stdbool.h>
+#include <string.h>
static GMainLoop *mainloop;
#include <stdio.h>
#include <sensor_internal.h>
#include <stdbool.h>
+#include <string.h>
static GMainLoop *mainloop;