drm/i915/icl: Don't allocate fixed bypass path blocks for ICL
GEN9 onwards bypass path allocation of 4 blocks was needed, as per hardware design. ICL doesn't require bypass path allocation of 4 DDB blocks, handling the same in this patch. v2 (from Paulo): - No need for a comment that says what the code already says. Reviewed-by: NPaulo Zanoni <paulo.r.zanoni@intel.com> Reviewed-by: NJames Ausmus <james.ausmus@intel.com> Signed-off-by: NMahesh Kumar <mahesh1.kumar@intel.com> Signed-off-by: NPaulo Zanoni <paulo.r.zanoni@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180130134918.32283-2-paulo.r.zanoni@intel.com
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