webos-image: hdparm=webos2

:Release Notes:
Fix hdparm build warning caused by removal of wiper.sh

:Detailed Notes:

:Testing Performed:
MiniBAT
P2

:QA Notes:
No changes to image

:Issues Addressed:
[CMB-1120] hdparm=webos1 causes a build warning since build 646
[CMB-1154] CCC: hdparm=webos2

Open-webOS-DCO-1.0-Signed-off-by: Kyrylo Kropivyanskiy <kyrylo.kropivyanskiy@lge.com>
Change-Id: Ie1beebc81ed65169d5c2007c94ed15049b198338
Originally-reviewed-on: https://gpro.palm.com/59215
Reviewed-on: https://g2g.palm.com/6429
Reviewed-by: Martin Jansa <Martin.Jansa@lge.com>
Tested-by: Martin Jansa <Martin.Jansa@lge.com>
Reviewed-by: Susan Montooth <susan.montooth@lge.com>