drm/i915/dmc: Add pipe dmc registers and bits for DC Balance

Add pipe dmc registers and  access bits for DC Balance params
configuration and enablement.

--v2:
- Separate register definitions for transcoder and
pipe dmc. (Ankit)
- Use MMIO pipe macros instead of transcoder ones. (Ankit)
- Remove dev_priv use. (Jani, Nikula)

--v3:
- Add all register address, from capital alphabet to small. (Ankit)
- Add EVT CTL registers.
- Add co-author tag.
- Add event flag for Triggering DC Balance.

--v4:
- Add DCB Flip count and balance reset registers.

--v5:
- Correct macro usage for flip count. (Ankit)
- Use register offset in lower case.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Link: https://patch.msgid.link/20251223104542.2688548-3-mitulkumar.ajitkumar.golani@intel.com

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