drm/xe/oa/uapi: Add/remove OA config perf ops

Introduce add/remove config perf ops for OA. OA configurations consist of a
set of event/counter select register address/value pairs. The add_config
perf op validates and stores such configurations and also exposes them in
the metrics sysfs. These configurations will be programmed to OA unit HW
when an OA stream using a configuration is opened. The OA stream can also
switch to other stored configurations.

v2: Start config id's from 1 and other minor review comments (Umesh)
v3: Add 32 bit build
v4: Add kernel doc for non-static functions (Michal)

Acked-by: Rodrigo Vivi <[email protected]>
Acked-by: José Roberto de Souza <[email protected]>
Reviewed-by: Umesh Nerlige Ramappa <[email protected]>
Signed-off-by: Ashutosh Dixit <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

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