Re-enable QSPI RTOS driver test

[GitJRS]

There is a fix in progress which addresses a flash issue with 2v0 boards. Once that is merged, the test/rtos-drivers/hil qspi test should be re-enabled in CI.

[GitJRS]

blocked by #46

[xmos-jmccarthy]

The flash test is currently broken.

It appears that since the lib_qspi_fast_read change that the qspi test was silent failing. There are 2 reasons for this, firstly there is no pytest checker in hil_add to verify that QSPI passed, hiding that it has been failing. Second, the flashing of the calibration pattern is missing in the CI test portion.

For #157 the qspi test has been temporarily disabled for the CI. This PR was verified locally.

Please reenable:

fwk_rtos/test/rtos_drivers/hil_add/hil_add.cmake

Line 6 in 2ee97ef

set(QSPI_FLASH_FAST_READ_TEST 0)

and update accordingly.