PX4/NuttX branch test: px4_firmware_nuttx-8.2

NuttX:
 - https://github.com/PX4-NuttX/nuttx/tree/px4_firmware_nuttx-8.2
 - PX4/NuttX@befe53e

Changes from PX4/NuttX (PX4/NuttX@db7fb6b) in current PX4/master (5e343b1)
PX4/NuttX@db7fb6b...befe53e

befe53e7f1 (HEAD, origin/px4_firmware_nuttx-8.2, origin/HEAD, px4_firmware_nuttx-8.2) [BACKPORT] NXP RDDRONE-UAVCAN boards (S32K1XX) - Clean up clock config (#557)
09a23ebf7f [BACKPORT] NXP S32K1XX EVB boards - clock config cleanup (#556)
6c95d5fc33 [BACKPORT] NXP S32K1XX peripheral clock fixes (#555)

Apps:
 - https://github.com/PX4/NuttX-apps/tree/px4_firmware_nuttx-8.2
 - PX4/NuttX-apps@91b6ad6

Changes from PX4/NuttX-apps (PX4/NuttX-apps@91b6ad6) in current PX4/master (5e343b1)
PX4/NuttX-apps@91b6ad6...91b6ad6