sdm710 : fixed VNDK compilation for warlock

Change-Id: Ic095cf2aeec77b914dff6966c0cff66124f7a146
diff --git a/power-710.c b/power-710.c
index 487f319..034a19c 100644
--- a/power-710.c
+++ b/power-710.c
@@ -35,6 +35,8 @@
 #include <fcntl.h>
 #include <dlfcn.h>
 #include <stdlib.h>
+#include <pthread.h>
+#include <unistd.h>
 
 #define LOG_TAG "QTI PowerHAL"
 #include <utils/Log.h>