Update HM01B0 driver. (#1125)
Update HM01B0 driver. (#1125)

* Fix framerate for QVGA and QQVGA.
* Fix set_exposure calculations.
* Calculate vt_pix_clk from dividers in OSC register.
* Implement frame rate for HM01b0.
* Fix frame timing for QQVGA
* Implement set_framerate.
iabdalkader/openmv,kwagyeman/openmv,kwagyeman/openmv,openmv/openmv,kwagyeman/openmv,iabdalkader/openmv,iabdalkader/openmv,openmv/openmv,iabdalkader/openmv,openmv/openmv,openmv/openmv,kwagyeman/openmv