neta: fix cache operation

	Use device pointer (instead NULL) in cache functions.

Change-Id: I9c40ce013a8ecca26fc27c753ea05b3672685520
Signed-off-by: Yelena <yelena@marvell.com>
Reviewed-on: http://vgitil04.il.marvell.com:8080/5250
Tested-by: Star_Automation <star@marvell.com>
Reviewed-by: Dmitri Epshtein <dima@marvell.com>
Reviewed-by: Tawfik Bayouk <tawfik@marvell.com>
Tested-by: Tawfik Bayouk <tawfik@marvell.com>
3 files changed