util: refactor to use DETECT_OS_ANDROID

except leaving u_endian.h behind to use __ANDROID__ directly to be
consistent with the rest in that file, which deserves a different
refactor

Signed-off-by: Yiwei Zhang <zzyiwei@chromium.org>
Reviewed-by: Yonggang Luo <luoyonggang@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27374>

src/util/os_memory_fd.c

@@ -128,7 +128,7 @@ os_malloc_aligned_fd(size_t size, size_t alignment, int *fd, char const *fd_name
    if(mem_fd < 0)
       return NULL;
 
-#if defined(HAVE_MEMFD_CREATE) || defined(ANDROID)
+#if defined(HAVE_MEMFD_CREATE) || DETECT_OS_ANDROID
    // Seal fd, so no one can grow or shrink the memory.
    if (fcntl(mem_fd, F_ADD_SEALS, F_SEAL_SHRINK | F_SEAL_GROW | F_SEAL_SEAL) != 0)
       goto fail;