uapi/v4l2-controls: Reset V4L2_CID_USER_BCM2835_ISP_BASE to same as 5.10

https://github.com/raspberrypi/linux/issues/4440



Upstream has added additional device specific controls, so the
V4L2_CID_USER_BASE + 0x10e0 value that had been defined for use with
the ISP has been taken by something else (and +0x10f0 has been used as
well)

Duplicate the use on V4L2_CID_USER_BASE + 0x10e0 so that userspace
(libcamera) doesn't need to change. Once the driver is upstream, then
we'll update libcamera to adopt the new value as it then won't change.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>