msm8960/8974/8084: Include string.h where it is necessary

Change-Id: If14f25659b3f898b19fde6c9d920998e80d19660

msm8084/libgralloc/ionalloc.cpp

@@ -30,6 +30,7 @@
 #define DEBUG 0
 #include <sys/ioctl.h>
 #include <sys/mman.h>
+#include <string.h>
 #include <stdlib.h>
 #include <fcntl.h>
 #include <cutils/log.h>

msm8084/libqdutils/mdp_version.cpp

@@ -27,6 +27,7 @@
  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 #include <cutils/log.h>
+#include <string.h>
 #include <linux/msm_mdp.h>
 #include "mdp_version.h"
 

msm8960/libgralloc/ionalloc.cpp

@@ -30,11 +30,11 @@
 #define DEBUG 0
 #include <linux/ioctl.h>
 #include <sys/mman.h>
+#include <string.h>
 #include <stdlib.h>
 #include <fcntl.h>
 #include <log/log.h>
 #include <errno.h>
-#include <string.h>
 #include "gralloc_priv.h"
 #include "ionalloc.h"