Revert "power: max17048: power down if the battery voltage is too low"

This reverts commit f830735bf9b382404d1a4c57b2c631161428d2dd.

Change-Id: I7765da9131386d9cd0292ed6716f961667ac6198
Merge "Revert "power: max17048: power down if the battery voltage is too low"" into kk4.4
Revert "arm/dt: hammerhead: set power down vbatt level to 3.05V"

This reverts commit 91137ddb397ceae2cbcba4f2511052494073d296.

Change-Id: I832819cdacb90d5629d057fe40e4307f56e47094