[media] exynos4-is: Copy timestamps from M2M OUTPUT to CAPTURE buffer queue

Backport of linux f0c24fd81f704730c529dc69aa57f21c1ade5c4e. The timestamp_type
field was introduce in later kernels, so not set in this backport.

original ommit message:
   Add copying of buffer timestamps and set the timestamp_type to
   V4L2_BUF_FLAG_TIMESTAMP_COPY to avoid warnings about UNDEFINED
   timestamp type like:
    WARNING: at drivers/media/v4l2-core/videobuf2-core.c:2042 vb2_queue_init+0xe0/0x18c()
    Modules linked in:
    [<c0016ef0>] (unwind_backtrace+0x0/0x13c) from [<c0029b3c>] (warn_slowpath_common+0x54/0x64)
    [<c0029b3c>] (warn_slowpath_common+0x54/0x64) from [<c0029b68>] (warn_slowpath_null+0x1c/0x24)
    [<c0029b68>] (warn_slowpath_null+0x1c/0x24) from [<c03b7018>] (vb2_queue_init+0xe0/0x18c)
    [<c03b7018>] (vb2_queue_init+0xe0/0x18c) from [<c03b4e08>] (v4l2_m2m_ctx_init+0xa0/0xc4)
    [<c03b4e08>] (v4l2_m2m_ctx_init+0xa0/0xc4) from [<c03ca6c4>] (fimc_m2m_open+0x130/0x1f8)
    [<c03ca6c4>] (fimc_m2m_open+0x130/0x1f8) from [<c03a5dd4>] (v4l2_open+0xac/0xe8)
    [<c03a5dd4>] (v4l2_open+0xac/0xe8) from [<c0113920>] (chrdev_open+0x9c/0x158)
    [<c0113920>] (chrdev_open+0x9c/0x158) from [<c010e488>] (do_dentry_open+0x1f8/0x280)
    [<c010e488>] (do_dentry_open+0x1f8/0x280) from [<c010e600>] (finish_open+0x34/0x50)
    [<c010e600>] (finish_open+0x34/0x50) from [<c011cc58>] (do_last+0x5bc/0xc00)
    [<c011cc58>] (do_last+0x5bc/0xc00) from [<c011d34c>] (path_openat+0xb0/0x484)
    [<c011d34c>] (path_openat+0xb0/0x484) from [<c011d824>] (do_filp_open+0x30/0x84)
    [<c011d824>] (do_filp_open+0x30/0x84) from [<c010e0f8>] (do_sys_open+0xe8/0x170)
    [<c010e0f8>] (do_sys_open+0xe8/0x170) from [<c000f040>] (ret_fast_syscall+0x0/0x30)

    Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
    Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
    Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Merge pull request #2 from sjoerd-ccu/endless

[media] exynos4-is: Copy timestamps from M2M OUTPUT to CAPTURE buffer qu...