coresight: Remove misleading definitions

coresight: Remove misleading definitions

ETM_OPT_* definitions duplicate the PMU format attributes that have
always been published in sysfs. Hardcoding them here makes it misleading
as to what the 'real' PMU API is and prevents attributes from being
rearranged in the future.

ETM4_CFG_BIT_* definitions just define what the Arm Architecture is
which is not the responsibility of the kernel to do and doesn't scale to
other registers or versions of ETM. It's not an actual software ABI/API
and these definitions here mislead that it is.

Any tools using the first ones would be broken anyway as they won't work
when attributes are moved, so removing them is the right thing to do and
will prompt a fix. Tools using the second ones can trivially redefine
them locally.

Perf also has its own copy of the headers so both of these things can be
fixed up at a later date.

Reviewed-by: Leo Yan <leo.yan@arm.com>
Reviewed-by: Mike Leach <mike.leach@linaro.org>
Tested-by: Leo Yan <leo.yan@arm.com>
Signed-off-by: James Clark <james.clark@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20251128-james-cs-syncfreq-v8-10-4d319764cc58@linaro.org