esp32h2: default XTAL is 32mhz

[MabezDev]

This doesn't seem to be causing problems right now, but the fact we don't have a feature for it, in esp-hal or espflash means we were probably not aware of this.

[jessebraham]

As a side note, which has been raised before (more than once), it's incredibly unclear how to map from the clock diagrams in the TRMs to our clock code. Would be really helpful having some documentation here, as clocks seem to be randomly selected from both the left and right edges of the diagram.

[jessebraham]

Now that we've eliminated the XTAL frequency features I think we can close this? Unless I'm missing something the H2 seems to be using this frequency now.

@MabezDev please re-open if I am mistaken.

[MabezDev]

The 32MHZ xtal case is not yet handled so we need to keep this open.

[jessebraham]

Can you elaborate please? What actually needs to be done? The XTAL frequency in boot defaults is 32MHz, where else does this need to be changed?

[MabezDev]

I spent most of today trying to remember why I wanted to not forget about this, it was this issue I wanted to test: #766 and I think the xtal was the issue. We can close this now.