ANDROID: Enable percpu high priority kthreads for erofs

This change enables 2 configs
CONFIG_EROFS_FS_PCPU_KTHREAD
CONFIG_EROFS_FS_PCPU_KTHREAD_HIPRI

With these changes scheduling latency is reduced by ~80%
Bug: 271636126
Tests: launch_cvd
Change-Id: I91076edd3c7dcbb3497ca0accf98af28c43f4ffb
Signed-off-by: Sandeep Dhavale <dhavale@google.com>
(cherry picked from commit f8e756a6)