remove unneeded includes; ok mpi@

Remove unused device poll functions.

Also remove unneeded includes of <sys/poll.h> and <sys/select.h>.

Some addenda from jsg@.

OK miod@ mpi@

In preparation for once again trying the resolve the claim multiple
report ids conflict, extract the claim multiple report ids conditional
in order to minimize the required upcoming changes to resolv

In preparation for once again trying the resolve the claim multiple
report ids conflict, extract the claim multiple report ids conditional
in order to minimize the required upcoming changes to resolve the
conflict.

Tested by gnezdo@

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Allow uhidev child devices to claim selective report ids

There may be multiple matching devices on a single uhidev device but
the first device that responds to UHIDEV_CLAIM_ALLREPORTID will
block th

Allow uhidev child devices to claim selective report ids

There may be multiple matching devices on a single uhidev device but
the first device that responds to UHIDEV_CLAIM_ALLREPORTID will
block the others from attaching.

Change this to UHIDEV_CLAIM_MULTIPLE_REPORTID and require any
devices wanting some/all report ids to fill in the claimed array in
uhidev_attach_arg with just the reports it needs. uhidev can then
run match routines for other drivers with the available report ids.

ok anton

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introduce ujoy(4), a restricted subset of uhid(4) for gamecontrollers.
This includes ujoy_hid_is_collection() to work around limitations of
hid_is_collection() until this can be combined without fall

introduce ujoy(4), a restricted subset of uhid(4) for gamecontrollers.
This includes ujoy_hid_is_collection() to work around limitations of
hid_is_collection() until this can be combined without fallout.

input, testing with 8bitdo controller, and ok brynet@
PS4 controller testing, fix for hid_is_collection, and ok mglocker@

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