pixelstats: move learning/model load path to sysfs

Reporting learning(relaxation) and model loading once a day
 * learning and model loading path moved from uevent to
   sysfs collector.

Bug: 329124192
Signed-off-by: Chungro Lee <chungro@google.com>
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:e0d7a249370a93828b128cbffbab7ca9237cad90)
Merged-In: I91039ce3a8ee4630a76113ef7ae6be3bc6908f64
Change-Id: I91039ce3a8ee4630a76113ef7ae6be3bc6908f64
1 file changed