Update Renesas gen3 setup script for BSP 2.19.

Update Renesas gen3 setup script for BSP 2.19.

* directly use the *.zip file, no need to untar any more.

Bug-AGL: SPEC-605

Change-Id: I970c0f7a7d2eeae05f2a53fd9eca1e0a37916938
Signed-off-by: Ronan Le Martret <ronan.lemartret@iot.bzh>
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/9373
Tested-by: Jenkins Job builder account <agl-jobbuilder@automotivelinux.org>
Reviewed-by: Changhyeok Bae <changhyeok.bae@lge.com>
Reviewed-by: Stéphane Desneux <stephane.desneux@iot.bzh>
Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>