Add HAVE_PREAD definition to platforms

ZipFileRO uses pread() to guarantee atomic reads at an offset, so use
the HAVE_PREAD flag to trigger off of. The only platform that doesn't
implement it directly is Windows.

Change-Id: Ic927611dc45b75ff8f672ed59afee5be1ad07ab4

include/arch/darwin-x86/AndroidConfig.h

@@ -285,4 +285,9 @@
  */
 #define HAVE_SCHED_H 1
 
+/*
+ * Define if pread() exists
+ */
+#define HAVE_PREAD 1
+
 #endif /*_ANDROID_CONFIG_H*/

include/arch/freebsd-x86/AndroidConfig.h

@@ -344,4 +344,9 @@
  */
 #define HAVE_SCHED_H 1
 
+/*
+ * Define if pread() exists
+ */
+#define HAVE_PREAD 1
+
 #endif /*_ANDROID_CONFIG_H*/

include/arch/linux-arm/AndroidConfig.h

@@ -339,4 +339,9 @@
  */
 #define HAVE_SCHED_H 1
 
+/*
+ * Define if pread() exists
+ */
+#define HAVE_PREAD 1
+
 #endif /* _ANDROID_CONFIG_H */

include/arch/linux-sh/AndroidConfig.h

@@ -346,4 +346,9 @@
  */
 #define HAVE_UNWIND_CONTEXT_STRUCT
 
+/*
+ * Define if pread() exists
+ */
+#define HAVE_PREAD 1
+
 #endif /* _ANDROID_CONFIG_H */

include/arch/linux-x86/AndroidConfig.h

@@ -313,4 +313,9 @@
  */
 #define HAVE_SCHED_H 1
 
+/*
+ * Define if pread() exists
+ */
+#define HAVE_PREAD 1
+
 #endif /*_ANDROID_CONFIG_H*/

include/arch/target_linux-x86/AndroidConfig.h

@@ -330,4 +330,9 @@
  */
 #define HAVE_SCHED_H 1
 
+/*
+ * Define if pread() exists
+ */
+#define HAVE_PREAD 1
+
 #endif /* _ANDROID_CONFIG_H */

include/arch/windows/AndroidConfig.h

@@ -318,4 +318,9 @@
  */
 /* #define HAVE_SCHED_H */
 
+/*
+ * Define if pread() exists
+ */
+/* #define HAVE_PREAD 1 */
+
 #endif /*_ANDROID_CONFIG_H*/