preempt_rt: Move sched/core: nr_migrate = 128 increases number of tasks to iterate in a single balance run. patch out of glitched base, and only apply on non-preempt-rt.

Fixes a conflict on 5.4.y, 5.10.y and 5.15.y

linux-tkg-patches/5.4/0003-glitched-base.patch

@@ -31,31 +31,6 @@ index 2acfc69878f5..3f1131431e06 100644
  EXPORT_SYMBOL_GPL(sysctl_vfs_cache_pressure);
  
  __cacheline_aligned_in_smp DEFINE_SEQLOCK(rename_lock);
-diff --git a/kernel/sched/core.c b/kernel/sched/core.c
-index 211890edf37e..37121563407d 100644
---- a/kernel/sched/core.c
-+++ b/kernel/sched/core.c
-@@ -41,7 +41,7 @@ const_debug unsigned int sysctl_sched_features =
-  * Number of tasks to iterate in a single balance run.
-  * Limited because this is done with IRQs disabled.
-  */
--const_debug unsigned int sysctl_sched_nr_migrate = 32;
-+const_debug unsigned int sysctl_sched_nr_migrate = 128;
- 
- /*
-  * period over which we average the RT time consumption, measured
-@@ -61,9 +61,9 @@ __read_mostly int scheduler_running;
- 
- /*
-  * part of the period that we allow rt tasks to run in us.
-- * default: 0.95s
-+ * XanMod default: 0.98s
-  */
--int sysctl_sched_rt_runtime = 950000;
-+int sysctl_sched_rt_runtime = 980000;
- 
- /*
-  * __task_rq_lock - lock the rq @p resides on.
 diff --git a/lib/Kconfig b/lib/Kconfig
 index 5fe577673b98..c44c27cd6e05 100644
 --- a/lib/Kconfig