Add fallocate/fallocate64/posix_fallocate/posix_fallocate64.

Bug: 5287571
Bug: 12612860
Change-Id: I4501b9c6cdf9a830336ce0b3afc4ea716b6a0f6f
diff --git a/libc/include/fcntl.h b/libc/include/fcntl.h
index f6a89ef..b7b91f2 100644
--- a/libc/include/fcntl.h
+++ b/libc/include/fcntl.h
@@ -41,11 +41,15 @@
 #define O_ASYNC  FASYNC
 #endif
 
-extern int  open(const char*  path, int  mode, ...);
-extern int  openat(int fd, const char*  path, int  mode, ...);
-extern int  unlinkat(int dirfd, const char *pathname, int flags);
-extern int  fcntl(int   fd, int   command, ...);
-extern int  creat(const char*  path, mode_t  mode);
+extern int creat(const char*, mode_t);
+extern int fallocate64(int, int, off64_t, off64_t);
+extern int fallocate(int, int, off_t, off_t);
+extern int fcntl(int, int, ...);
+extern int openat(int, const char*, int, ...);
+extern int open(const char*, int, ...);
+extern int posix_fallocate64(int, off64_t, off64_t);
+extern int posix_fallocate(int, off_t, off_t);
+extern int unlinkat(int, const char*, int);
 
 #if defined(__BIONIC_FORTIFY)