Auto-initialize PSRAM

[bugadani]

This allows removing the locking around reading the memory range.

[bugadani]

skip-changelog because of a change I made to esp-alloc, which is inside a macro so it shouldn't be user observable. Except it's breaking because it relies on breaking changes in esp-hal 🤔

[bjoernQ]

(still) works fine

[Dominaezzz]

Not sure if this is the right place to bring this up but if static linking and/or XiP from PSRAM are still going to be a thing, the auto-initialization would (eventually) be moved out of esp_hal::init to somewhere before main right?

[MabezDev]

Thanks!