UPSTREAM: binder: fix pointer cast warning

binder_uintptr_t is not the same as uintptr_t, so converting it into a
pointer requires a second cast:

drivers/android/binder.c: In function 'binder_translate_fd_array':
drivers/android/binder.c:2511:28: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
 2511 |         sender_ufda_base = (void __user *)sender_uparent->buffer + fda->parent_offset;
      |                            ^

Fixes: 656e01f3ab54 ("binder: read pre-translated fds from sender buffer")
Acked-by: Todd Kjos <tkjos@google.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20211207122448.1185769-1-arnd@kernel.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Bug: 257685302
(cherry picked from commit 9a0a930fe2535a76ad70d3f43caeccf0d86a3009)
Change-Id: I1c9b86a90bcf2be81012e59e0c472869f551e61a
Signed-off-by: Carlos Llamas <cmllamas@google.com>