Support for AMD CPUs

[PhilippWendler]

Recent AMD CPUs provide energy measurements via an interface that is similar to Intel RAPL. CPU Energy Meter should be made to work on these CPUs as well.

Links:

• Blog post with information and measurements: https://metebalci.com/blog/epyc-energy-consumption-test/
• Kernel driver amd_energy: https://github.com/amd/amd_energy
• The driver intel-rapl also supports AMD: https://github.com/torvalds/linux/blob/master/drivers/powercap/intel_rapl_msr.c
• List with AMD's reference documentation: https://bugzilla.kernel.org/show_bug.cgi?id=206537
• Another tool that supports this: https://github.com/deater/uarch-configure/blob/master/rapl-read/rapl-read.c
• Overview of CPU families that support it: https://web.eece.maine.edu/~vweaver/projects/rapl/rapl_support.html