Fixed compilation error #include <android/*h>

Fixed compilation error when header in #include <android/*h> is
included alone.

Fix for rect.h already exists in $ANDROID/frameworks/native/include/android

Change-Id: I7c49e044507581c5ad591f26f99cda6870b411c5

ndk/platforms/android-9/include/android/asset_manager.h

@@ -18,6 +18,8 @@
 #ifndef ANDROID_ASSET_MANAGER_H
 #define ANDROID_ASSET_MANAGER_H
 
+#include <sys/types.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif

ndk/platforms/android-9/include/android/rect.h

@@ -18,11 +18,16 @@
 #ifndef ANDROID_RECT_H
 #define ANDROID_RECT_H
 
+#include <stdint.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 typedef struct ARect {
+#ifdef __cplusplus
+    typedef int32_t value_type;
+#endif
     int32_t left;
     int32_t top;
     int32_t right;