add TASK* options

These options are needed by iotop and glances.

olinux/config/linux-sunxi.config

@@ -88,7 +88,10 @@ CONFIG_TICK_CPU_ACCOUNTING=y
 # CONFIG_VIRT_CPU_ACCOUNTING_GEN is not set
 # CONFIG_IRQ_TIME_ACCOUNTING is not set
 # CONFIG_BSD_PROCESS_ACCT is not set
-# CONFIG_TASKSTATS is not set
+CONFIG_TASKSTATS=y
+CONFIG_TASK_DELAY_ACCT=y
+CONFIG_TASK_XACCT=y
+CONFIG_TASK_IO_ACCOUNTING=y
 
 #
 # RCU Subsystem