Revert "Revert "Enable scheduler boost for zygote.""

This reverts commit cd36771e2f99e1cd5ef9fba32169f8f58f69d2a5.
diff --git a/BoardConfig.mk b/BoardConfig.mk
index 223ced0..03062df 100644
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -27,6 +27,7 @@
 TARGET_2ND_CPU_VARIANT := cortex-a7
 
 ENABLE_CPUSETS := true
+ENABLE_SCHED_BOOST := true
 
 TARGET_NO_BOOTLOADER := true