Update SystemSuspend Kernel Wakelock Stats

Read stats from /sys/class/wakeup/wakeupN instead of
/sys/class/wakeup/<name>. (This change was made to avoid
name collision in the kernel).

Bug: 128923994
Test: SystemSuspendUnitTest

Change-Id: Ie1b52197bf0be7f40e1dbd404b05104944df63c3
2 files changed