arm64: Allow the idreg override to deal with variable field width

Currently, the override mechanism can only deal with 4bit fields,
which is the most common case. However, we now have a bunch of
ID registers that have more diverse field widths, such as
ID_AA64SMFR0_EL1, which has fields that are a single bit wide.

Add the support for variable width, and a macro that encodes
a feature width of 4 for all existing override.

No functional change.

Signed-off-by: Marc Zyngier <[email protected]>
Reviewed-by: Mark Brown <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Will Deacon <[email protected]>

0 files changed, 0 insertions, 0 deletions