Instead of duplicating the CLKCFG parsing, reuse i9xx_fsb_freq() to
figure out rawclk_freq where applicable.
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/21511f155f1f446e066117bc6ed3165618d7afd6.1718356614.git.jani.nikula@intel.comSigned-off-by: Jani Nikula <jani.nikula@intel.com>