Add support for compressor frequency in 16-bit format with 1 decimal.

[miipekk-ihme]

This patch adds support for compressor frequency in 16-bit format with 1 decimal accuracy. My MSZ-RW25VG-SC1 reports the frequency in new format with the old byte set to zero:

[04:17:42][D][READ:170]: FC 62 01 30 10 06 00 00 00 01 01 DD 05 7C 00 00 42 00 00 00 00 B5 
[04:17:44][D][READ:170]: FC 62 01 30 10 06 00 00 00 01 01 F2 05 7C 00 00 42 00 00 00 00 A0 
[04:17:54][D][READ:170]: FC 62 01 30 10 06 00 00 00 01 01 F8 05 7D 00 00 42 00 00 00 00 99 
[04:18:05][D][READ:170]: FC 62 01 30 10 06 00 00 00 01 01 F5 05 7D 00 00 42 00 00 00 00 9C 
[09:12:11][D][READ:170]: FC 62 01 30 10 06 00 00 00 00 00 62 05 91 00 00 42 00 00 00 00 1D 
[09:12:13][D][READ:170]: FC 62 01 30 10 06 00 00 00 00 00 35 05 91 00 00 42 00 00 00 00 4A 
[09:12:25][D][READ:170]: FC 62 01 30 10 06 00 00 00 00 00 08 05 91 00 00 42 00 00 00 00 77 

[jasestu]

I never used to get compressor information until this PR was merged, so this is cool.

Only heat mode operation at the moment, though will probably be hitting cooling mode in a few weeks here...

The value reported from my outdoor unit that feeds four heads is very different. The other 3 units seem to report around 20-40Hz.

Indoor	Outdoor	Compressor (Heat)
MSZ-AP25VGD	MXZ-4F80VGD	0.1 - 2.0 Hz (multi head unit)
MSZ-AP35VGD	MUZ-AP35VG	18-25 Hz at steady state
MSZ-AP60VGD	MUZ-AP60VG	30 Hz steady, drop to 3 Hz at temp
MSZ-AP71VGD	MUZ-AP71VG	35 Hz steady state, 100+ on start

[miipekk-ihme]

I have now created a new pr #166 that contains various fixes, reverts the compressor sensor patch (it's actually the input power sensor) and new sensors. Please test and comment.