Revert "power: pm8921: M4 uses lpm_wrkarnd as well"

This reverts commit 94d6796a18ca00a3b79c18b4fd4b04e15554ac47.

Conflicts:

	drivers/power/pm8921-charger-htc.c
power: pm8921: M4 uses lpm_wrkarnd as well

Change-Id: Ifc86e0612c0af3f2cca2e401f75f52f324075d99

Conflicts:

	drivers/power/pm8921-charger-htc.c