Enable QSPI tests on ESP32 and clean up (#2198)

* Clean up qspi test cfgs, enable on ESP32

* Correct comments

* Clean up init_spi_data_mode

* Fix qspi_write on ESP32

* Further cleanup in SPI driver

* Clean up qspi_read

* Fix qspi_write_read test on ESP32

* Merge QSPI tests

* Clean up test

* Attempt to fix test GPIO assingment

* Update esp-hal/src/spi/master.rs

Co-authored-by: Dominic Fischer <[email protected]>

* Update esp-hal/src/spi/master.rs

* Make sure pins have no internal pullups

---------

Co-authored-by: Dominic Fischer <[email protected]>