enable support for large files (> 2G)

bionic has an i386 ifdef guard for the O_LARGEFILE flag. The reason for this
is not traceable in the git history, but it's most likely due to some old
toolchain or emulator problem.

Bug Id: 10035

Change-Id: I742ee6e50220276c2cb268d66f89b5655ef689fc
Signed-off-by: Dragos Tatulea <dragos.tatulea@intel.com>

libc/unistd/open.c

@@ -35,9 +35,7 @@ int open(const char *pathname, int flags, ...)
 {
     mode_t  mode = 0;
 
-#if !defined(__i386__)
     flags |= O_LARGEFILE;
-#endif
 
     if (flags & O_CREAT)
     {

libc/unistd/openat.c

@@ -35,9 +35,7 @@ int openat(int fd, const char *pathname, int flags, ...)
 {
     mode_t  mode = 0;
 
-#if !defined(__i386__)
     flags |= O_LARGEFILE;
-#endif
 
     if (flags & O_CREAT)
     {