Merge tag 'iio-fixes-for-5.4b' of https://git.kernel.org/pub/scm/linux/kernel/git...

Second set of IIO fixes for the 5.4 cycle.

* adis16480
  - Prevent negative numbers being accepted for sampling frequency.
* inv_mpu6050
  - Fix an issue where fifo overflow bits don't actually work as expected,
    by checking the fifo count instead.
* srf04
  - Allow more time for echo to signal as some sensors supported have
    a higher range.
* stm32-adc
  - Fix a potential race in dma disable by ensuring all transfers are done.

* tag 'iio-fixes-for-5.4b' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio:
  iio: adc: stm32-adc: fix stopping dma
  iio: imu: inv_mpu6050: fix no data on MPU6050
  iio: srf04: fix wrong limitation in distance measuring
  iio: imu: adis16480: make sure provided frequency is positive