Silence BORE config prompt and default to 500Hz tickrate when using it

linux-tkg-config/prepare

@@ -883,6 +883,8 @@ _tkg_srcprep() {
     # BMQ default config
     _enable "SCHED_ALT" "SCHED_BMQ"
     _disable "SCHED_PDS"
+  elif [ "${_cpusched}" = "bore" ]; then
+    _enable "SCHED_BORE"
   fi
 
   if [[ "${_cpusched}" =~ ^(muqss|pds|bmq|upds)$ ]]; then
@@ -1093,6 +1095,7 @@ _tkg_srcprep() {
     ["upds"]="3"
     ["cfs"]="3"
     ["bmq"]="3"
+    ["bore"]="3"
   )
 
   if [[ -n "$_timer_freq" && ! "${_avail_timer_frequencies[*]}" =~ "$_timer_freq" ]]; then