Lower potentially noisy alarm logs to debug

In a failure path where alarms are getting scheduled repeatedly without
data to read, printing in 'info' can add a lot of noise to the logs.
Reduce these to 'debug' so that we can continue to get information when
this happens but also allows logd to suppress.

Bug: 377601619
Flag: EXEMPT, log change
Test: m -j;
Test: Verified logs print in 'debug' only.
Change-Id: Ie7167014c32b7e39db045882eaefd88eadfedbaa