OpenShell: Patch devices shell command to work with misaligned device names found in some Apple firmware

This MSR is actually documented today and is apparently read
incorrectly by lots of software. They inspect the current multiplier,
not the max one. This mistake resulted in hardware starting with
reduced multiplier (e.g. 6.5 instead of 8.5 in MacBook5,2) to report
wrong frequency.

closes acidanthera/bugtracker#1576

Distinguishes the confirming action from absent focus.