hwmon: Add power meter spec to Documentation/hwmon/sysfs-interface
hwmon: Add power meter spec to Documentation/hwmon/sysfs-interface

Update the hwmon sysfs interface documentation to include a specification
for power meters.

Signed-off-by: Darrick J. Wong <7c104a478e7216c2bda2eb33e60eb18553b226b4@us.ibm.com>
Acked-by: Jean Delvare <49ad6a9f5aa17024c23048df346d55bda6837e01@linux-fr.org>
Signed-off-by: Mark M. Hoffman <5aed555d2bd1319e6397948a784e5d0b93442eeb@lightlink.com>

KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs