drm/i915: cleanup redundant checks from intel_enable_asle
Realize that intel_enable_asle() is never called on PCH-split platforms or on VLV. Rip out the GSE irq enable for PCH-split platforms, which also happens to be incorrect for IVB+. This should not cause any functional changes. Signed-off-by: NJani Nikula <jani.nikula@intel.com> Reviewed-by: NDamien Lespiau <damien.lespiau@intel.com> Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
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