Add missing includes.

Caused warnings about implicitly defined malloc() and sprintf().

Change-Id: Ia56309adc11caf5801ffd88e374c512b785cfd93

libcutils/process_name.c

@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+#include <stdlib.h>
 #include <string.h>
 #include <cutils/process_name.h>
 #include <cutils/properties.h>

libcutils/tzstrftime.c

@@ -8,6 +8,7 @@ static char	elsieid[] = "@(#)strftime.c	8.1";
 #endif /* !defined NOID */
 #endif /* !defined lint */
 
+#include <stdio.h>
 #include <time.h>
 #include <tzfile.h>
 #include <limits.h>