kernel dts: Rename SPI partition HYP-10200

Rename SPI flash partition from 'spare' to 'production'. This partition is used
during production of the board.

Signed-off-by: Mario Schuknecht <mario.schuknecht@dresearch-fe.de>
gadgetfs: Free memory allocated by memdup_user()

Commit 3b74c73f8d6f053f422e85fce955b61fb181cfe7 switched over to memdup_user()
in ep_write() function and removed kfree (kbuf).
memdup_user() function allocates memory which is never freed.

Signed-off-by: Mario Schuknecht <mario.schuknecht@dresearch-fe.de>