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- Remove unused bit definitions.
- Driver uses BIT(0) for waking/sleeping the domain and since the
registers are masked respective mask bit BIT(16) needs to be set. Use
defines for these bits and use them in domain initialization.

v3
- Use defines within domain_init

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Badal Nilawar <badal.nilawar@intel.com>
Suggested-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Reviewed-by: Badal Nilawar <badal.nilawar@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240606085720.1327152-1-himal.prasad.ghimiray@intel.com

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>