drm/i915: Fix HAS_LSPCON macro for platforms between GEN9 and GEN10

Legacy LSPCON chip from MCA and Parade is only used for platforms
between GEN9 and GEN10. Fixing the HAS_LSPCON macro to reflect the same.

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210208055554.24357-1-ankit.k.nautiyal@intel.com