zumapro: Set PELT HALFLIFE to 8ms before early init boot stage

It's for early boot stage boost. After early init stage, change
it back to the default 32ms.

This is from the similar change we had in zuma: ag/23681609

Bug: 300516320
Test: check the device boot.
Change-Id: I2286a94c31480766540e20cab619cc87363bdd1f

BoardConfig-common.mk

@@ -38,6 +38,7 @@ BOARD_KERNEL_CMDLINE += cma_sysfs.experimental=Y
 BOARD_KERNEL_CMDLINE += cgroup_disable=memory
 BOARD_KERNEL_CMDLINE += rcupdate.rcu_expedited=1 rcu_nocbs=all
 BOARD_KERNEL_CMDLINE += swiotlb=1024
+BOARD_KERNEL_CMDLINE += sysctl.kernel.sched_pelt_multiplier=4
 BOARD_BOOTCONFIG += androidboot.boot_devices=13200000.ufs
 
 TARGET_NO_BOOTLOADER := true

conf/init.zumapro.rc

@@ -4,6 +4,7 @@ import init.exynos.sensorhub.rc
 
 on early-init
     mount_all /vendor/etc/fstab.persist --early
+    write /proc/sys/kernel/sched_pelt_multiplier 1
 
 on init
     # CPU0 cannot be offline