eclass/cros-kernel2: Add install_prefix parameter.

BUG=b:163827141
TEST=emerge-${BOARD} chromeos-kernel-5_4

Change-Id: I621b93739c69203d04b07231b33ab0f54af22937
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/2411252
Tested-by: Allen Webb <allenwebb@google.com>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
1 file changed