[FS#266] ipq806x: current trunk fails to build

[LEDE Bugs]

The following task is now closed:

FS#266 - ipq806x: current trunk fails to build
User who did this - Mathias Kresin (mkresin)

Reason for closing: Fixed
Additional comments about closing: This issue is already fixed. Feel free to provide a better solution than disabling ARM PMU.

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=266